Asked by christopher
A sample consists of the following data 7,11,12,18,20,22,25. What is the sample variance?
Answers
Answered by
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.
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.
Answered by
christopher
I got 42.95
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