please do it step by step with the use of formulas , thank you..

The following are monthly percentage price changes for four market indexes.

Month DJ SP500

1 0.03 0.02 2 0.07 0.06 3 0.02 0.01 4 0.01 0.03 5 0.05 0.04 6 0.06 0.04

Russ500 Nicky

0.04 0.04 0.10 0.02 0.04 0.07 0.03 0.02 0.11 0.02 0.08 0.06

(17 points) Compute the following.

a. Average monthly rate of return for each index

b. Standard deviation for each index

c. Covariance between the rates of return for the following indexes:

DJ SP 500 SP500Russ500 SP500Nicky Russ500Nicky

d. The correlation coefficients for the same four combinations