Homework Help: statistics

Posted by Huffette on Sunday, November 18, 2012 at 4:51pm.

The following data lists the average monthly snowfall for January in 15 cities around the US:

38 0 47 32 42 31 40 47
35 43 36 17 36 8 1

Find the mean, variance, and standard deviation. Please show all of your work.

statistics - PsyDAG, Monday, November 19, 2012 at 3:25pm
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.

Standard deviation = square root of variance

I'll let you do the calculations.

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