EC300 Homework 9 (Due date: Tuesday, November 17) Refer to Table 10.1 in the text and look at the period from 1973 through 1978. a. Calculate the arithmetic average returns for large-company stocks and T-bills over this time period. b. Calculate the standard deviation of the returns for large-company stocks and T-bills over this time period. EC300 Homework 9 (Due date: Tuesday, November 17) Refer to Table 10.1 in the text and look at the period from 1973 through 1978. a. Calculate the arithmetic average returns for large-company stocks and T-bills over this time period. b. Calculate the standard deviation of the returns for large-company stocks and T-bills over this time period