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SOC1004 / POL1008: Introduction To Social Data - R studio Assignment Help
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Case : 1 The Mark of a Criminal Record To isolate the causal effect of a criminal record for black and white appli- cants, Pager ran an audit experiment. In this type of experiment, researchers present two similar people that differ only according to one trait thought to be the source of discrimination. This approach was used in the resume exper- iment described in Quantitative Social Science, where researchers randomly assigned stereotypically African-American-sounding names and stereotypi- cally white-sounding names to otherwise identical resumes to measure dis- crimination in the labour market. To examine the role of a criminal record, Pager hired a pair of white men and a pair of black men and instructed them to apply for existing entry- level jobs in the city of Milwaukee. The men in each pair were matched on a number of dimensions, including physical appearance and self-presentation. As much as possible, the only difference between the two was that Pager randomly varied which individual in the pair would indicate to potential employers that he had a criminal record. Further, each week, the pair alter- nated which applicant would present himself as an ex-felon. To determine how incarceration and race influence employment chances, she compared callback rates among applicants with and without a criminal background and calculated how those callback rates varied by race. The names and descriptions of variables in the dataset criminalrecord.csv are:
Task :
- Begin by loading the data into R and explore the data. How many cases are there in the data? Show a summary of the data. In how many cases is the tester black? In how many cases is the tester white? What proportion of applicants are black and white?
- Now we examine the central question of the study. Calculate the pro- portion of callbacks for white applicants with and without a criminal record, and calculate this proportion for black applicants with and without a criminal record.
- What is the difference in callback rates between individuals with and without a criminal record within each race (i.e. for black and white testers separately). What do these specific results tell us? Consider both the difference in callback rates for records with and without a criminal record and the ratio of callback rates for these two types of records.
- Compare the callback rates of whites with a criminal record versus blacks without a criminal record. What do we learn from this com- parison?
Task :
- Load the dbj.csv file. Find how many judges there are in the dataset, as well as the gender and party composition of our dataset. Is the party composition different for male and female judges? Additionally, note that our outcome in this exercise will be the proportion of pro-feminist rulings. What is the range of this variable progressive.vote?
- Next, consider the differences between some groups. For each of the four groups (Republican men/women, Democratic men/women) de- fined by gender and partisanship, create a boxplot (using a single com- mand) that illustrates the differences in progressive.vote. Briefly interpret the results of the analysis. For example, do any of the re- sults surprise you? Does it appear that partisanship, gender, or both contribute to progressive voting patterns? Should we interpret any of these effects causally? Why or why not?
- Create a new binary variable which takes a value of 1 if a judge has at least one child (that is, any children at all), 0 otherwise. Then, use this variable to answer the following questions. Are Republicans and Democrats equally likely to be parents (that is, have at least one child)? Do judges with children vote differently than judges without? If so, how are they different? Do republican and democratic parents vote differently on feminist issues?
- The final question explores differences in voting among judges born earlier and judges born later. Create a new binary variable which takes a value of ‘before 1935’ if a judge has is born before 1935, and ‘from 1935’ otherwise. Compare the progressive voting of Republican and Democrat judges separately (a) for those born before 1935 and (b) for those born 1935 or after. Produce two bar plots to show this: one for Republican-appointed judges and one for Democrat-appointed judges. Comment on the similarities and differences between the two charts, in terms of the changes to the progressive voting for judges born earlier and judges born later.
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