Requirements

$1$ In cell E$15,$ by using cell references, calculate the average return of stock A $(1$ pt$.).$

$2$ In cell F$15,$ by using cell references, calculate the average return of stock B $(1$ pt$.).$

$3$ In cell E$16,$ by using the STDEV function and cell references, calculate the standard deviation of the returns of stock A $(1$ pt$.).$

$4$ In cell F$16,$ by using the STDEV function cell references, calculate the standard deviation of the returns of stock B $(1$ pt$.).$