Access the data about tuitions and fees at 4-year colleges and universities, which are available at MyMathLab and at the Pearson Downloadable Student Resources for Math & Stats website.
a. Construct a dotplot of the tuitions and fees at public, 4-year colleges and universities and a dotplot of the tuition and fees at private, not-for-profit, 4-year colleges and universities. The two dotplots should share one horizontal axis.
b. Which type of 4-year institution tends to have larger tuition and fees, public colleges and universities or private, not-for-profit colleges and universities?
c. Estimate the smallest and largest tuition and fees for 4-year, public colleges and universities. Find the difference of the largest value and the smallest value.
d. Estimate the smallest and largest tuition and fees for 4-year, private, not-for-profit colleges and universities. Find the difference of the largest value and the smallest value.
e. Compare the results you found in parts (c) and (d). What does the comparison mean in this situation?