Calculate SS variance and standard deviation for the following sample of n = 5 scores&
10, 3, 8, 0, 4 &
1
Expert's answer
2010-12-05T19:14:40-0500
The mean is X = (10+3+8+0+4)/5 = 5 The variance is the average of the squared difference s from the mean: σ 2 = (52+(-2)2+32+(-5)2+(-1)2)/5 = 12.8 The standard deviation equals to square root of the variance: σ = √ (12.8) = 3.58
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