Consider the following table for a period of six years:

$\backslash$table$[[,,$Returns,$],[$Year$,$Large$-$company,Stocks,U$.$S$.$ Treasury$],[1,-16\mathrm{.}19\%,8111s,],[2,-26\mathrm{.}92,7\mathrm{.}59\%,],[3,37\mathrm{.}53,8\mathrm{.}14,],[4,24\mathrm{.}23,6\mathrm{.}17,],[5,-7\mathrm{.}76,6\mathrm{.}57,],[6,6\mathrm{.}87,5\mathrm{.}60,]]$

a$-1.$ Calculate the arithmetic average returns for large$-$company stocks and T$-$bills over this time period. Note: Do not round Intermedlate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

a$-2.$ Calculate the standard deviation of the returns for large$-$company stocks and T$-$bills over this time period. Note: Do not round Intermedlate calculatlons and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

$\backslash$table$[[,\backslash$table$[[$Large$-$company$],[$stocks$]],,$T$-$bills,$],[$a$-1.$ Arithmetic average return,$2,16,3,\%$