The past five monthly returns for Kohl’s are 3.60 percent, 3.77 percent, ?1.74 percent, 9.28 percent, and ?2.62 percent. Compute the standard deviation of Kohls’ monthly returns. (Do not round intermediate calculations and round your final answer to 2 decimal places.)
Average return : [3.60 +3.77 -1.74 +9.28 -2.62 ]/5
= 12.29/5
= 2.458
Variance : 1/n [(x1-ER)^2+ (x2-ER)^2+....+(x3-ER)^5]
1/5[(3.6-2.458)^2+(3.77-2.458)^2+(-1.74-2.458)^2+ (9.28-2.458)^2+ (-2.62-2.458)^2]
1/5 [1.3042+ 1.7213+ 17.6232+ 46.5397+ 25.7861]
1/5 [92.9745]
18.5949
standard deviation =square root of variance
SR(18.5949)
4.31%
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