Place for Section 101 and 114 to post reading memos, practice quiz questions, or study tools.
Wednesday, December 1, 2010
ZImbardo Prison Experiment
a. prisoners waned to quit
b. guards thought it was inhumane
c. a Berkeley professor told Zimbardo to stop it
d. Zimbardo felt the guards were out of control
2. When is it okay/acceptable to harm volunteers in a experiment? Choose the best answer.
a. never
b. sometimes
c. if the results benefit the world, way more then the harm.
d. all of the above
1. answer is C, all other possibilities are false.
2. answer is C, it could be B, but this answer is to vague.
Monday, November 29, 2010
Chapter 3 Question
Chapter 3 Question
Chapter 3
a. The Exxon employees were forced to participate in an experiment which would help the company find a way to increase profit
b. Participants of a household survey were going to be cross-examined in regards to what they answered on the confidential survey
c. University students were forced to participate in a mock prison experiment in which participants were harmed physically and mentally
d. Interviews of the Valdez family were published despite the fact that they were promised confidentiality
Answer: B. Details about this case are on page 65 under the title of Confidentiality.
Chapter 3
A) Invasion of privacy in the name of science
B) Disclosing their tearoom activities
C) Pretending to be a voyeur-participant
D) Both A and B
E) Both A and C
ANSWER: E
A) Correct but C is also correct.
B) Incorrect. This did not happen, he was being careful as to not harm his subjects.
C) Correct but A is also correct. This was considered unethical because of the deceit involved.
D) Incorrect. See above.
E) Correct. See above.
Babbie, Ch. 3 Question
a) The issue of harm towards participants
b) The issue of whether ethics and politics hinge on an ideological view
c) The issue of analysis and reporting
d) The issue of anonymity and confidentiality
Answer: b)
Babbie writes that both ethics and politics necessarily hinge on ideological points of view — that what is considered acceptable from one view will be considered acceptable from another point of view. (pg. 74)
Chapter 3:The Ethics and Politics of Social Research
A) to interrogate the subjects in a study
B) to find out something personal about the subjects in the study
C) to interview the subject to learn about the participants experience in the study
D) to learn about what the liked or disliked
E) none of the above
The correct answer is C.
It is the correct answer because in a debriefing we want to know what their experience was and what it could have caused, like if the participant could have suffered damage due to the study they were exposed to. This helps the experimenter learn about what is not working and what needs to be changed. The experimenter doesn't need to learn about anything personal in regards to the participant nor what the subject likes or dislikes and they don't want to interrogate the subject. The purpose of a study and the use of participants is to make them feel safe and interrogating them is not going to help them cooperate. It cannot e none of the above because C is the correct answer.
Ethics and Stanley Milgram
a) subjects were physically harmed in the study by the administered electro-shocks.
b) the results of the respondents' surveys were not kept anonymous or confidential.
c) subjects were deceived into thinking they were causing extreme physical harm to another.
d) participation in the study by the subjects was involuntary.
Answer:
a) Incorrect - in the study, no subjects were physically harmed. However, participants were deceived into thinking they were physically harming someone.
b) Incorrect - this study was an experiement and did not involve surveys.
c) Correct -The study involved a situation where the subjects were "teachers" who were to punish a "student" whenever he answered a question incorrectly by administering electro-shocks. Really, the "student" only feigned the pain and the electro-shocks were not real, but the subjects believed they were truly harming the individual.
d) Incorrect - Milgram's subjects were all voluntary and consisted of 40 men within ages 20 to 40 from the New Haven, CT area.
sources: Milgram Experiment video (http://www.myspace.com/video/vid/5512184), Babbie Ch 3 pg 73-74
Quiz question for chapter 3
Sunday, November 28, 2010
Chapter 11: ways to avoid misclassifying errors
1)Select random cases from each category if possible.
2)Give three examples for each claim you make
3)Have others review your analytic interpretations
4) Report inconsistencies. Few social patterns are completely consistent.
Monday, November 22, 2010
Unobtrusive Research (Chapter 11)
a) Investigating written documents
b) Looking at statistical numbers available on webpages
c) Going to field to observe kids play soccer
d) Studying historical records (e.g., patterns that occur in different epochs)
Answer: a, b, and d, for there's direct interference in letter c.
Monday, November 15, 2010
Ch. 11 Reading Question
Babbie, Ch. 11 Question
a) It is an inexpensive method of research
b) It allows for the study of processes occurring over a long period of time
c) Errors found in the study are easily fixed
d) Problems of validity are unlikely
Answer: d
Problems of validity are in fact likely to occur in content analysis.
Wednesday, November 10, 2010
Critical Language Scholarship Deadline Approaching! NOV 15
Check out and apply for this govt sponsored scholarship: www.clscholarship.org
2011 Spring Internship -- Consumer Financial Protection w/ the gov
The U.S. Treasury Department’s Office of Domestic Finance is currently working to execute the
Dodd-Frank Wall Street Reform Act by implementing plans to “stand up” the Consumer
Financial Protection Bureau (CFPB). The CFPB Implementation Team is now seeking
several undergraduate and graduate volunteer interns for the Spring 2011 semester.
Description:
This is an exciting and unique opportunity to participate in the ground-up construction of a brand
new federal regulatory agency. Candidates should be comfortable managing multiple complex
tasks in a fast-paced environment. Past intern projects have included: summarizing, researching,
and analyzing consumer protection legislation; conducting legislative and regulatory research;
researching pressing issues in the field of consumer finance, such as mortgage and credit card
disclosure policies; drafting talking points and memos; as well as providing administrative
support to our growing policy team.
Qualifications:
Prior knowledge of consumer financial issues and/or law is helpful, but not mandatory.
Candidates must be enrolled in a degree-granting academic program, have excellent analytical
and writing skills, and must be comfortable using Microsoft Word, Excel, and PowerPoint.
Candidates able to make a full-time commitment are preferred.
Interested candidates should submit a resume and cover letter to
consumerintern@do.treas.gov by Monday, November 15, 2010.
The U.S. Treasury Department is an Equal Employment Opportunity Employer.
Tuesday, November 9, 2010
Quiz Question (Cracks in the Pavement)
Quiz Question: Inter-/Intra-group(ethnic) Relations in "Cracks in the Pavement"
a) Mom and pop stores increased conflict within groups (ethnicities).
b) Mom and pop stores decreased conflict within groups.
c) Mom and pop stores increased conflict between groups.
d) Mom and pop stores decreased conflict between groups.
e) Mom and pop stores increased integration between groups.
Monday, November 8, 2010
Mom and Pop Store Legitimacy Sanchez-Jankowski
(1) Supplying provisions and owner's willingness to allow space for social interaction Sanchez-Jankowski argues that the substance, strength, and quantity of these interactions were very important to the resident's everyday lives.
(2) Those of ethnicity, economic status, gender and age, none of which can be understood in isolation.
Quiz Question: Uses of Gossip from Cracks in the pavement
Cracks in the Pavement - True/False Question
-
a) The number of establishments in a neighborhood is a good indicator of a neighborhood's health.
b) In an enterprise establishment, the store owner scolds people for loitering and tells people to leave the establishment if they are not going to buy anything.
c) When mom and pop stores close, this does not necessarily lead to social disorganization.
d) All of the above are true.
e) All of the above are false.
ANSWERS
a) FALSE. "Whether or not a neighborhood is structured and healthy depends on the functional quality, not quantity, of its establishment's institutional contents" (265).
b) True. "In building an enterprise type of establishment, the owner's first strategy was to limit, and ultimately remove, goup relations and social exchanges in the store" (264).
c) True. "The disappearance of mom and pop stores does not produce social disorganization; it merely initiates a reconfiguration of the social structure and order" (265),
d) There is a false answer.
e) There are two true answers.
"Cracks in the Pavement" Memo
How does a mom-pop shop achieve neighborhood institutional status and why does it play a pivotal role in the neighborhoods in the study?
According to the article a mom-pop shop achieves institutional status and integrates itself into the subculture of the neighborhood by meeting certain criteria. There are three things that must be present, the history of the store ownership, the reinforcement of ethnic groups’ taste in food products, and social interaction that facilitate the creation of a status system. The mom-pop shops are pivotal to the community because they support ethnic cultures and facilitate networking for the lower class social class of these ethnic groups.
"Cracks in the Pavement" question & memo
a. thefts
b. government taxes
c. store merchants wanting more profit
d. continuous bankruptcies
Answer: a) page 269 in the reader, a graph is provided to demonstrate the increase in average prices that follow after robberies at the stores studied in an average 12-month period.
memo:
Related to the increase in prices, customer credit was eliminated because of increased robberies, higher insurance payments, diminished business due to customer apprehension. (page 269)
The article studied the changes in the mom-and-pop stores in 5 different neighborhoods and their implications in the structure of their neighborhoods. They provided social and material support for their community. Provided meeting areas, helped incorporate new people into the existing social structure, order and helped reinforce the divisions of the neighborhoods. Loss of these institutions for various reasons created a strain on the neigborhoods. Sanchez-Jankowski argued it was a short-term strain, not somethin that promoted an ultimate decay.
Martin Sanchez-Jankowski: Quiz Question
A. imperialist
B. holdout
C. trailblazer
D. indigenous
E. colonial
ANSWER: C. trailblazer
An "imperialist" establishment was one where "the store's owner, who is neither a resident nor an ethnic compatriot and has no socioeconomic connection to the neighborhood, views it as a means to make a decent living and accumulate capital and equity for socioeconomic mobility."
A "holdout" type was one where "the owner had bought and run the store back when ethnic groups that now no longer live in the neighborhood were the residents."
A "trailblazer" is the one mentioned above. It is the type of mom-and-pop store acquired by someone who saw an emerging business opportunity from the neighborhood's changing population dynamics.
An "indigenous" was one where "the store owner currently lived in the neighborhood or had lived there in the past and was a member of one of the dominant ethnic groups.
"Colonial" was made up and is not a type of mom-and-pop store.
Thursday, November 4, 2010
When forming a question/survey
Make sure the question is short and precise. This allows the reader to understand the question and answer quickly.
Avoid negative items such as the words "impossible", "not" or "didn't"
Avoid charged terms like "welfare"
Don't survey with threatening questions
Make sure the survey is spread out and uncluttered
Don't put more than one question on a line
Wednesday, November 3, 2010
Chapter 9 Survey Research
a) starting with quick-to respond questions
b) fucusing on the subject matter as soon as possible
c) starting with quick-to respond questions and being polite
d) offering some type of reward at the end of the survery
e) both b and d
Answer c) is the more appropriate one, for first impression always matters.
Chapter 10: Research Tradition
William Foote Whyte’s ethnography of Cornerville, is one of the earliest illustrations of which research tradition?
a) Ethnomethodology
b) Grounded theory
c) Case studies
d) Naturalism
e) Institutional ethnography
Answer: D
Naturalism approaches field research assuming that social realities exist which can be observed and reported accurately. William Foote Whyte decided to become an insider during his study to actually get all the information about the social life on the streets that he wanted and to get the most out of it. His reports on the people were made through the experience of being one of the people in the community not an outsider.
Babbie, Ch 10 Study Question
Babbie Ch. 10- Qualitative Field Research Paradigms
a. naturalism is the approach to field research based on the assumption that an objective social reality exists and can be observed and reported accurately
b. grounded theory is a deductive approach to the study of social life that attempts to use a theory to make comparable observations
c. ethnomethodology is the method of studying social life that involves intentionally breaking agreements that are usually unspoken as a way of revealing their existence
d. participatory action research is the approach to social research where the people being studied are given control over the purpose and procedures of the research
e. all of the above are correct definitions of different field research paradigms
b. CORRECT. the definition provided above is the definition of hypothesis testing; grounded theory is an inductive approach to the study of social life that compares unfolding observations in attempt to generate a theory;
Babbie Chapter Ten Extended Case Method
The extended case method is used to strengthen existing theories.
Answer: False
"Extended case method has the purpose of discovering flaws in, and then modifying existing social theories." (Babbie 298)
This is different from grounded theory, where theorists seek to enter the study without preconceived notions and "generate theory from the constant comparing of unfolding observations." (Babbie 296)
Extended case study seeks to "lay out as coherently as possible what we expect to find before entry." (Babbie 298)
Tuesday, November 2, 2010
Babbie Chp. 10: Strengths and Weaknesses of Qualitative Field Research Quiz Question
A) An advantage of field research is the depth of understanding it can provide.
B) An advantage of field research is its inexpensiveness.
C) An advantage of field research is its flexibility.
D) Field research measurements generally have more validity.
E) Field research measurements generally have more reliability.
A) True! Other research methods are often seen as "superficial," but field research escapes this fault.
B) True! Other research methods often require costly equipment or expensive personnel, but field research cna be done by one researcher with pen and paper.
C) True! You can modify a field research design at any time. You're also always prepared to engage in field research which does not always occur with surveys or experiments.
D) True! There is more validity with field research because you are actually there at the scene where the subject of the matter is taking place.
E) False! (correct answer) Field research measurements generally have less reliability, because others would not necessarily make the same observations as you.
Monday, November 1, 2010
Internal Validity Resource
Nine threats to internal validity are described, followed by an example and a contrasting nonexample as applied to the hypothetical experiment. An explanation is included of why the example represents a threat to internal validity and why the nonexample is not a threat.
Then there's a quiz where you can test yourself.
Who Are the Europeans- Fligstein quiz question
According to Diez Medrano and Gutierrez what are NOT the mechanisms by which individuals are able to hold seemingly contradictory identities
A. In smaller groups, individuals will likely feel more control than in larger groups
B. In smaller groups, smaller groups are more desirable and therefore more common.
C. Larger groups, under the right conditions, will be able to provide positive identities for individuals.
D. Larger group’s identity comes into play under circumstances where it can prove useful
E. All of the above are true
The correct answer is B. This is a made up statement. All the others explain how it is that people can hold up different identities and therefore be used to explain hoe Europeans can handle so may different identities at once. Pg 173 of reader.
Thursday, October 28, 2010
Chapter 8: Experiments
a) 20%
b) 30%
c) 40%
d) 50%
e) 60%
The answer is d) 50%, so both groups may have the same amount of representative subjects.
Masculinity Quiz
A)Masculinity is more valued than femininity in most social contexts.
B)The hegemonic masculine ideal can never actually be completely achieved.
C)Lower testosterone levels lead to an overcompensation.
D)Increasing one's masculinity necessarily diminishes the masculinity of others.
Answer: C. Men with higher testosterone levels are more sensitive to masculinity threats than those with lower testosterone levels.
Wednesday, October 27, 2010
Willer's Test of Masculine Overcompensation
Overcompensation Quiz Question
Quiz Question: Willer - Overdoing Gender
A. Response rate
B. Overcompensation
C. Causality
D. Generalizability
E. Spuriousness
Answer: D. Generalizability
"The greatest weakness of laboratory experiments lies in their artificiality." -Babbie Ch. 8
Because lab settings are so controlled and unlike the real world, it is cautionary to use its findings to make generalizations about the entire population. Furthermore, Studies 1 and 2's participants were all undergraduate students of a large, Eastern private university. Study 3, on the other hand, surveyed people of differing age, gender, race, educational attainment, region, as well as whether they were California residents. This gave the study much more external validity because the research subjects were much more representative of the population.
The answer is not "response rate" because, if anything, national surveys would have greater issues of response rate than lab experiments. Those who participate in lab experiments are often individuals who choose to participate for one reason or another (e.g. money or extra credit) so therefore would respond during experimentation. Those who receive surveys, however, do not provide consent before receiving surveys so would be less likely to respond.
The answer is not "overcompensation" because that is made up and makes no sense.
The answer is not "causality" nor "spuriousness." These are strengths of lab experiments. By controlling for possible confounding variables, lab experiments are able to better establish causality.
Willer: OVERDOING GENDER
A) This describes hierarchy of needs
B) This describes hierarchical nature of masculinity
C) This describes hegemonic masculinity
D) None of the above
ANSWER: B
A) Incorrect. This is Maslow's theory in psychology.
B) Correct. Although the hegemonic masculinity is relative depending on the region, a society has a set of particular behaviors that are desirable in men. Thus, creates a social pressure compelling men to strive for this standard which in turn threatens other men's standing in their masculinity.
C) Incorrect. This is a standard, a set of behaviors, that is socially constructed for men.
D) Incorrect. See above.
Quiz Question: connecting Willer's article to chapter 8
A Test of the Masculine Overcompensation Thesis
(i)The masculine overcompensation thesis asserts that men react to masculinity threats with extreme demonstrations of masculinity.
(ii)Iraq war support, negative views of homosexuality, and support for then president Bush
(iii)Found no evidence that testosterone mediated the masculine overcompensation effect, consistent support was found for a moderation effect.
Key Points/Applications in Willer
[UPDATE]: Gdocs' preview function is being rather uncooperative, or I'm just user failing. (Probably the latter.)
If it doesn't open here in Google, try viewing it in Microsoft Docs BETA.
And if THAT doesn't work, here's a question:
WHAT does the step-wise process detailed in this blog post represent?
a) contiguity
b) incompetence
c) statistical regression
d) contingency
Monday, October 25, 2010
Babbie Ch.9 Question
Babbie Ch.9 Question
Chapter 9
The number of people who respond to a survey divided by the number of people that were selected to do the survey, as a percent is the __________.
A) Response Rate
B) Completion Rate
C) Return Rate
D) All of the above
E) None
CORRECT ANSWER: D
Because they all mean the same thing: the percent of those individuals who are actually participating over the total surveys sent out to a sample. For instance if we were to do a survey and we sent out the survey to a sample of 200 people but only got back 165 responses out response rate/completion rate/return rate would be 165 / 200 = 82.5%.
Babbie, Ch. 9 Question
Friday, October 22, 2010
Chap 9 Survey Research
a. contingency question
b. open-ended question
c. closed-ended question
d. double-barreled questions
1. How satisfied are you with the school conditions and school tuition?
Very satisfied, satisfied, not satisfied.
2. What do you feel is the most important issue facing American teenagers today?
3. Do you drink coffee?
Yes, No. If yes, how many cups a day do you drink? One, 2-5, 6-10, 11-20, more then 20
4. Do you know your height?
Yes, No, I dont know
1. d) double-barreled question- A question that asks for a single answer but has multiple parts. This example is asking about the respondents satisfaction towards their school conditions and combining it with another part, their satisfaction with school tuition. These are two parts, combined into one question, forcing the respondent to answer both with one response. (Babbie p 247) This is also an example of a (c) closed ended question, but since it is double barreled, d) would be the best choice, because this is a situation researchers should avoid when creating closed-ended questions.
2. b) open-ended question - A question where the respondent is asked to provide his or her own answers. (Babbie p 246)
3. a) contingency question - A survey question intended for only some respondents, determined by their responses to some other question. (Babbie p 253) This is also (c) a close-ended question, since it provides answers constructed by the researcher for the respondent to choose from.
4. c) close-ended question - Survey quetions in which respondent is asked to select an answer from among a list provided by the researcher. (Babbie 247)
Wednesday, October 20, 2010
Chapter 8 quiz question
Which of the following statements is false?
A. The static group comparison is not a recommended experiment design because it uses pretest methods
B. The static group comparison is not a recommended experiment design because it is seen as less than professional
C. The classical experiment design looks at all 12 forms of internal validity
D. The classical experiment runs the risk of influencing the subjects, or effecting their answers.
E. All of the above statements are true.
Answer: A. In fact the static group method does not use pretest methods.
B. The static group comparison, along with the one group pretest posttest design and the one shot case study are all frequently used in less-than-professional experiments
C. If done correctly the classical experiment design can in fact deal with all twelve point of possible internal validity
D. One of the problems with classical experiment design is that the pretesting runs the risk of influencing the subject, so the statement is true.
Quiz Question ch. 8 Experiments
Quiz Question Ch. 8
In an experiment, when assigning a subject to a control or experimental group which method would be most effective in studying a large population?
A. Probability Sampling
B. Randomization
C. Matching
D. Web-Based Sampling
A. Nope. In social scientific experiments many subjects are not involved, and probability sampling is not fairly representative if there is less than 100 subjects. This means that probability sampling is seldom used in large populations.
B. THIS IS CORRECT. Randomization works with large populations because each sample (control and experimental) reflects the characteristics of the total population. This means that the two samples will reflect each other.
C. Wrong. Matching is a way to achieve comparability between the control and experimental groups . When separating the groups into sample and control through the process of matching you may not always know what variables will be relevant for the matching process.
D. Wrong, because I made up the term and it just doesn’t make sense.
Tuesday, October 19, 2010
A) Natural Experiment
B) Randomized Experiment
C) Double Blind Experiment
D) Control Experiment
A) Wrong Answer: A natural experiment can occur in the course of natarul events (like a hurricane) it contains neither a predertemined control or experimental group.
B) Wrong Answer: I made up Randomized Experiment.
C) Correct!! A Double blind experiment is designed to avoid experimenter bias. To ensure that both the experimental and the control group are observed and measured as identically as possible, neither the experimenter nor the subjects know which is the control group or the experimental group.
D) Wrong Answer. I made up up the term: Control Experiment.
Quiz Question Babbie Ch. 8 Experiments-Subject Selection
A. Probability Sampling
B. Double-Blind Selection
C. Matching
D. Randomization
e. All of the above are methods that might be chosen
A. is not correct, because probability sampling is a method of subject selection. it is a general term for samples selected in accord with the probability theory, such as systematic sampling, that typically involves some sort of random selection mechanism.
B. is the CORRECT answer. double-blind selection is not a term used in regards to subject selection. a double-blind experiment, however, is a design implemented once subjects are already chosen to help guard against experimenter bias, where neither the experimenter or the subject knows which subjecs are in the control and experimental groups.
C. is not correct, because matching is a method of subject selection whereby pairs of subjects are matched on the basis of their similarities on one or more variables; one member of the pair is assigned to the control group and the other is assigned to the experimental group.
D. is not correct, because randomization is a method of subject selection. it is the technique of assigning experimental subjects to experimental and control groups randomly.
E. is not correct because double-blind selection is not a method of subject selection.
Monday, October 18, 2010
Question on Chapter 7: The Logic of Sampling – Probability sampling
Which one of the following definitions refers to PPS (a type of probability sampling)?
- A type of sampling in which the units composing a population are assigned numbers. A set of random numbers is then generated, and the units having those numbers are included in the sample.
- A type of sampling in which every kth unit in a list is selected for inclusion in the sample.
- A type of sampling in which each member of population has the same chance of being selected into the sample.
- A type of multistage cluster sample in which clusters are selected, not with equal properties but with probabilities proportionate to their sizes – as measured by the number of units to be subsampled.
- None of the above.
Answer: D
PPS: Probability Proportionate to Size is a type of multistage cluster sample in which clusters are selected, not with equal properties but with probabilities proportionate to their sizes – as measured by the number of units to be subsampled.
EPSEM: A type of multistage cluster sample in which clusters are selected, not with equal properties but with probabilities proportionate to their sizes – as measured by the number of units to be subsampled.
Systematic sampling: A type of sampling in which every kth unit in a list is selected for inclusion in the sample.
Simple random sampling: A type of sampling in which the units composing a population are assigned numbers. A set of random numbers is then generated, and the units having those numbers are included in the sample.
Creating Effective Tables
a. tables that show the relationship between two variables
b. tables that show give information on one variable its association among other variables
c. tables that present among three variables or sets of related variables, such as joint distribution of three categorical variables
d. tables that show information on each variable alone rather than associations among variables
e. none of the above
a. incorrect-tables that show the relationship between two variables are examples of bivariate tables
b. incorrect-tables that show give information on one variable its association among other variables; univariate tables don't show association among variables
c. incorrect-tables that present among three variables or sets of related variables, such as joint distribution of three categorical variables are three-way tables
d. correct-tables that show information on each variable alone rather than associations among variables are univariate tables. Common types of univariate tables include those that present the distribution of a variable or composition of a sample.
e. incorrect answer-none of the above
Question on Chapter 7: The Logic of Sampling
A ___________ sampling is a nonprobability sampling method often employed in field research whereby each person interviewed may be asked to suggest additional people for interviewing, whereas, ____________ sampling is a type of nonprobability sampling in which units are selected into a sample on the basis of prespecified characteristics, so that the total sample will have the same distribution of characteristics assumed to exist in the population being studied.
- Reliance on variable subjects, Quota
- Purposive, Reliance on variable subjects
- Snowball, Quota
- Quota, Purposive
- Snowball, Purposive
Answer: C
Reliance on available subjects sampling: such as stopping people at a street corner or some other location, is an extremely risky sampling method.
Purposive Sampling: a type of nonprobability sampling in which the units to be observed are selected on the basis of the researcher’s judgment about which ones will be the most useful or representative.
Snowball Sampling: a nonprobability sampling method often employed in field research whereby each person interviewed may be asked to suggest additional people for interviewing
Quota Sampling: is a type of nonprobability sampling in which units are selected into a sample on the basis of prespecified characteristics, so that the total sample will have the same distribution of characteristics assumed to exist in the population being studied.
Question on Creating Effective Tables
Which one of the following definitions fits the Bivariate type of tables?
- Tables showing information on each variable alone rather than associations among variables.
- Tables showing the relationship between two variables.
- Tables presenting information on associations among three variables or sets of related variables.
- Both B and C fall under the Bivariate table type.
Answer: B
Tables showing information on each variable alone rather than associations among variables are called Univariate Tables.
Tables showing the relationship between two variables are Bivariate.
Tables presenting information on associations among three variables or sets of related variables are Three-Way Tables.
Because B and C have their own definitions they don’t fit into a single category.
Sunday, October 17, 2010
Babbie Chp. 7 Nonprobability Sampling
A) reliance on available subjects
B) purposive or judgmental sampling
C) snowball sampling
D) quota sampling
E) none of the above
A) Correct! Relying on available subjects is sometimes called convenience or haphazard sampling. An example of reliance on available subjects is stopping people at a street corner.
B) Wrong! Purposive or judgmental sampling is a type of nonprobability sampling in which the units to be observed are selected on the basis of the researcher's judgment about which ones will be the most useful or representative. This would be selecting a sample on the basis of knowledge of a population.
C) Wrong! Snowball sampling is a nonprobability sampling method often employed in field research whereby each person interviewed may be asked to suggest additional people for interviewing. It is also known as a form of accidental sampling. This is used when members of a special population are difficult to locate, like homeless.
D) Wrong! Quota sampling is a type of nonprobability sampling in which units are selected into a sample on the basis of prespecified characteristics, so that the total sample will have the same distribution of characteristics assumed to exist in the population being studied.
E) Wrong! Reliance on available subjects is the correct answer!
Saturday, October 16, 2010
Chapter 7 Quiz Question - Measuring Accuracy of Samples
a) standard deviation
b) sampling error
c) confidence level
d) confidence interval
Answers:
a) incorrect - Standard deviation is "a measure of dispersion around the mean" (414). It is not directly related to the accuracy of of a sample statistic from the parameter of a population. However, one should note that "standard error is the standard deviation of the sampling distribution" (Babbie 196).
b) correct - Sampling error is "the degree of error to be expected in probability sampling", which is what Nancy wants to know (196).
c) incorrect - Confidence level, a component of sampling error, is is "the estimated probability that a population parameter lies within a given confidence interval" (197). While Nancy would want to know this information, it would not tell her everything she needs to know about the accuracy of her sample statistic.
d) incorrect - Confidence interval, a component of sampling error, is "the range of values within which a population value is estimated to lie" (197). While Nancy would want to know this information, it would not tell her everything she needs to know about the accuracy of her sample statistic.
Friday, October 15, 2010
Chapter 16 Question
A) both summarize a set of sample observations
B) both move beyond the description of specific observations to make inferences about the larger population sample
C) the former summarizes the sample observations while the latter goes beyond and infers broadly from which the sample observations were drawn.
Answer: c)
Thursday, October 14, 2010
Ch. 16 Quiz question: Measures of association
A. Gamma, Sigma, Lambda
B. Gamma, Lambda, Pearson's r
C. Lambda, Gamma, Perason's r
D. Lambda, Gamma, Alpha
E. Alpha, Gamma, Sigma
Answer: C
For nominal variables, the lambda measure of association is used (however, it is not limited to lambda - lambda is only one of several measure of association that can be used to analyze two nominal variables) Lambda is based on your ability to guess the values of one variable through knowing the values of another variable. Values of lambda vary from 0 to 1.
For ordinal variables, gamma is one appropriate measure of association. Like lambda, gamma is based on our ability to guess values on one variable by knowing values on another. However, gamma is based on guessing the ordinal arrangement of values. Values of gamma vary from -1 to +1, representing the direction as well as the magnitude of the association (positive or negative correlation).
For interval and ratio variables, Pearson’s product-moment correlation (r) is one appropriate measure of association. Like both gamma and lambda, r is based on guessing the value of one variable by knowing another. However, more specifically, r reflects how closely you can guess the value of one variable through your knowledge of the value of another.
Sigma and alpha are made up and irrelevant in this case. They were not in the reading.
Wednesday, October 13, 2010
Study tool: use of units and labeling in effective tables (Effective Tables, Jane E. Miller)
Memo - Babbie Chapter 16: Statistical Analysis
Chapter 16: Statistical Analyses
What is Descriptive Statistics (DS), and what is its objective?
- Descriptive statistics is a statistical computation describing ether the characteristics of a sample or the relationship among variables in a sample.
- Objective: DS summarizes a set of sample observations or the association between two variables into measures of proportionate reduction of error (PRE)
PRE – A logical model for assessing the strength of a relationship by asking how much knowing values on one variable would reduce our errors in guessing values in the other.
There are 3 models of PRE:
Nominal Variables – if two variables consist of nominal data (ex. Gender, religious affiliation, race) you can substitute each variable with a lambda (λ) to measure the exact value in proportion to the overall distribution.
Example: Of the group of 500 students, who attended the conference, 375 students are supporters of the Republican Party and 125 students were supporters of the Democratic Party. If you were to have guessed how many students are affiliated with the Republican Party or the Democratic Party, the exact value in proportion to the overall distribution of Democratic Students will be .25. λ = .25.
Ordinal Variables – Ordinal data (social class, religiosity, and alienation) measure a relationship between two variables, and uses the symbol gamma (γ) to guess values on one variable by knowing values on another.
Example from the book: Check for correlation. Are the variables showing a negative or positive relationship?
Let’s say you suspect that religiosity is positively related to political conservatism, and if Person A is more religious than Person B, you guess that A is also more conservative than B. In a negatively related correlation, Person A is more religious than Person B, but A is less conservative than B.
Interval / Ratio Variables – one measurement for interval/ratio variables is Pearson’s product-moment correlation (r), which is based on guessing the value of one variable by knowing another, or how closely you can guess the value of one variable through your knowledge of the value of another. For continuous interval or ratio variables, it is unlikely that you could predict the precise value of the variable.