During the five years, you owned two stocks that had the following annual rates of return.

$\backslash$table$[[$Year$,$Stock A$,$Stock B$],[1,19\%,8\%],[2,8,3],[3,-12,-9],[4,-3,2],[5,15,4]]$

a$.$ Compute the standard deviation and Covariance for both stocks.

b$.$ Calculate the geographic mean return of both stocks. If you invest $$20,000$ in first year, how much will you obtain in year $5?$