Is there a difference in the variation of the yields of different types of investments? The file CD Rate contains the yields for one- year certificates of deposit (CDs) and five- year CDs for 22 banks in the United States, as of March 12, 2014. Source: Data extracted from www.Bankrate.com, March 12, 2014.

a. For one- year and five- year CDs, separately compute the variance, standard deviation, range, and coefficient of variation.

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