Two investments generated the following annual returns:

Investment X Investment Y

$20$X$011\%23\%$

$20$X$11618$

$20$X$22615$

$20$X$32121$

$20$X$4816$

What is the average annual return on each investment? Round your answers to one decimal place.

The average annual rate of return on X:

$\%$

The average annual rate of return on Y:

$\%$

What is the standard deviation of the return on investments X and Y$?$ Round your answers to two decimal places.

Standard deviation of X:

Standard deviation of Y:

Based on the standard deviation, which investment was riskier?

$-$Select$-$

was riskier.