$($Question $6\mathrm{.}6$: Consider a stock that earned $8\%,-2\%$ and $15\%$ annually over three consecutive years. What was this stock's arithmetic average annual return during that period? Answer in percent. $).$ Same stock as in Question $6\mathrm{.}6$: Consider a stock that earned $8\%,-2\%$ and $15\%$ annually over three consecutive years. What was this stock's compound average annual return during that period? Answer in percent, rounded to two decimal places.