2. Consider the following five monthly returns: Month Return 0.05 0.02 0.04 0.08 -0.01 a. b. c. d. e. Calculate the arithmetic average monthly return over this period. Calculate the compound monthly return over this period. Calculate the monthly variance over this period. Calculate the monthly standard deviation over this period. Explain the difference between the arithmetic average return in part (a) and co monthly return in part (b). Are both numbers useful? Explain why mpound