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01-10-2017
Mathematics

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A sample of n = 9 scores has a variance of s2 = 144. what is the standard deviation for this sample?

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barnuts barnuts

11-10-2017

The relationship between variance and standard deviation is simply:

s = standard deviation

s^2 = variance

s = sqrt (s^2)

Therefore calculating for s:

s = sqrt (144)

s = 12

So we get the standard deviation is simply 12 scores.

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