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A sample consists of the following data 7,11,12,18,20,22,25. What is the sample variance?
12 years ago

Answers

PsyDAG
Find the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

I'll let you do the calculations.
12 years ago
christopher
I got 42.95
12 years ago

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