Statistics I think I have the answer
posted by Stuart .
The salaries (in thousands of dollars) for a sample of 13 employees of a firm are: 26.5, 23.5, 29.7, 24.8, 21.1, 24.3, 20.4, 22.7, 27.2, 23.7, 24.1, 24.8, and 28.2.
Compute the variance of the salaries.
a)2.562
b)6.125  I Picked this
c)9.223
d)7.097

Your pick is incorrect. It's either c) or d). Remember that standard deviation is the square root of the variance, and variance is standard deviation squared.
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