annual return for Vanguard Balanced Index $(60\%$ stock and $40\%$ bond$).$ For the past several years, we have the following data.

$x$:$,29,0,32,16,26,33,28,-16,-19,-20$

$y$:$,15,-1,11,24,17,28,26,-8,-11,-5$

$($a$)$ Compute $x,x^2,y,y^2.$

$x$

$x^2$

$y$

$y^2$

$($c$)$ Compute a $75\%$ Chebyshev interval around the mean for $x$ values and also for $y$ values. $($Round your answers to two decimal places.$)$

Lowar $1$ imit

Upp

Use the intervals to compare the two funds.

$75\%$ of the returns for the balanced fund fall within a narrower range than those of the stock fund.

$75\%$ of the returns for the stock fund fall within a narrower range than those of the balanced fund.

$25\%$ of the returns for the balanced fund fall within a narrower range than those of the stock fund.

$25\%$ of the returns for the stock fund fall within a wider range than those of the balanced.

$($d$)$ Compute the coefficient of variation for each fund. $($Round your answers to the nearest whole number.$)$

Use the coefficients of variation to compare the two funds.

For each unit of return, the stock fund has lower risk.

Eor each unit of return the halanced fund has Inwer risk