A stock had returns of 10 percent, -4 percent, 4 percent, and 18 percent over the...

A stock had returns of 10 percent, -4 percent, 4 percent, and 18 percent over the past four years. What is the standard deviation of these returns?

Expert Solution

Answer is standard deviation 9.31%

Period	return	(return -Mean)^2
1	10%	0.0009
2	-4%	0.0121
3	4%	0.0009
4	18%	0.0121
Total variance		0.0087
standard deviation Sqrt of ((Total Varaince)/(4-1))		9.31%

Mean

7.00%

jeff jeffy answered 2 years ago

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