Problem $12-7$ Calculating Returns and Variability $[$LO$1]$

$\backslash$table$[[$Year$,$Eeturns$],[x,$r$],[1,122,182],[2,26,27],[3,12,18],[4,-19,-24],[5,18,18]]$

Uaing the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for $x$ and $Y.$ Note: Do not round intermediate calculations. Enter your average return and standard deviation answers as a percent rounded to $2$ decimal places, e$.$g$.3216,$ and round the variance answers to $5$ decimal places, e$.$g$.,16161.$

$\backslash$table$[[,$K$,$Y$,],[$Average returns,$8\mathrm{.}20,\%,9\mathrm{.}50,\%$