Question

The last four years of returns for a stock are as follows: Year 3 2 28.3% Return - 4.1% 12.3% 4.3% a. What is the average annual return? b. What is the variance of the stock's returns? c. What is the standard deviation of the stock's returns? a. What is the average annual return? The average return is 10.20 %. (Round to two decimal places.) b. What is the variance of the stock's returns? The variance of the returns is 190.44000. (Round to five decimal places.) c. What is the standard deviation of the stock's returns? The standard deviation is 13.80 %. (Round to two decimal places.)
Hi, can you check these answers? Thank you!

Answer 1

YEAR	RETURN	(X -Average Return of X)^2
1	-4.1	204.490000
2	28.3	327.610000
3	12.3	4.410000
4	4.3	34.810000
Total	40.8	571.320000
Average Return =	Total Return / NO of years
	40.8 / 4
	10.2
Variance =	sum of (X -Average Return of X)^2 / no of years
	571.32 / 3
	190.44000
Standard Deviation =	Square root of Variance
	Square root of 190.44
	13.80