The file CD Rate contains the yields for one-year certificates of deposit (CDs) and five-year CDs, for 24 banks in the United States, as of June 21, 2012.
Source: Data extracted from www.Bankrate.com, June 21, 2012.
For each type of account:
a. Compute the first quartile (Q3), the third quartile (Q3), and the interquartile range.
b. List the five-number summary.
c. Construct a boxplot and describe its shape.

d. Based on the results of (a), do one-year CDs or five-year CDs have more variation in the yields offered? Explain.