Go to www.pearsonhighered.com/ sullivanstats to obtain the data file SullivanStatsSurveyII using the file format of your choice for the version of the text you are using. One question asked in this survey is, "What percent of income do you believe individuals should pay in federal income tax?"
(a) Draw a relative frequency histogram of the data in the column "Tax Rate" using a lower class limit of the first class equal to 0 and a class width of 5. Comment on the shape of the distribution. What is the class with the highest relative frequency?
(b) Determine the mean and median tax rate.
(c) Determine the standard deviation and interquartile range of tax rate.
(d) Determine the lower and upper fences? Are there any outliers?
(e) In this chapter, we have focused on bivariate quantitative data. However, side-by-side boxplots may be used to see association between a qualitative and quantitative variable. Draw side-by-side boxplots of tax rate by gender. Comment on any interesting features. Which gender appears to prefer the higher tax rate?
(f) Draw side-by-side boxplots of tax rate by political philosophy. Comment on any features in the graph.