You've observed the following returns on Pine Computer's stock over the past five years: $8$ percent, $-12$ percent, $14$ percent, $21$ percent, and

$216$ percent. What was the arithmetic average returefon the company's stock over this five$-$year period? What was the variance of the company's returns over this period? The standard deviation?

$3$

$4$ Input area:

$\backslash$table$[[\frac{\text{Y}\text{e}\text{a}\text{r}}{1},$Returns$],[1,8\%$

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