Here are the returns on two stocks.

$\backslash$table$[[,\backslash$table$[[$Digital$],[$Cheese$]],\backslash$table$[[$Executive$],[$Fruit$]]],[$January$,+19,+8],[$February$,-3,+1],[$March$,+5,+4],[$April$,+7,+17],[$May$,-4,+2],[$June$,+3,+4],[$July$,-2,-3],[$August$,-8,-2]]$

Required:

a$-1.$ Calculate the variance and standard deviation of each stock.

$0-2.$ Which stock is riskier if held on its own?

b$.$ Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks.

c$.$ Is the variance more or less than halfway between the variance of the two individual stocks?

Complete this question by entering your answers in the tabs below.

Req A$1$

ReqA$2$

Calculate the variance and standard deviation of each stock.

Note: Do not round intermediate calculations. Round your answers to $2$ decimal places.

$\backslash$table$[[\frac{?}{\text{b}\text{a}\text{r}}(C),\backslash$table$[[$Digital Cheese$],[$Retum$]],\backslash$table$[[$Executive Fruit$],[$Return$]]],[$Variance$,\%,$