Is there a difference in the variation of the yields of different types of investments? The file SavingRate-MMCD contains the yields for a money market account and a five-year certificate of deposit (CD), for 25 banks in the United States, as of March 29, 2010.
a. For money market accounts and five-year CDs, separately compute the variance, standard deviation, range, and coefficient of variation.
b. Based on the results of (a), do money market accounts or five-year CDs have more variation in the yields offered? Explain.