7. Problem 6-07 eBook Problem 6-07 The following are monthly percentage price changes for four market indexes. Month DJIA S&P 500 Russell 2000 Nikkei 1 0.02 0.01 0.05 0.05 2 0.07 0.06 0.10 -0.03 3 -0.01 -0.01 -0.05 0.06 4 0.01 0.03 0.03 0.01 $ 0.04 0.05 0.11 0.01 -0.07 0.05 -0.09 0.07 Compute the following. a. Average monthly rate of return for each index. Round your answers to five decimal places. DILA S&P 500: Russell 2000 Nikkei b. Standard deviation for each index. Do not round intermediate calculations. Round your answers to four decimal places DIAL S&P 500 Russell 2000 Nike c. Covenance between the rates of return for the following indexes. Use a minus sign to enter negative values, if any. Do not round intermediate calculations Round your answers to six desimal place Covariance (038A, S&P 500)