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October 24, 2014

October 24, 2014

Posted by **Bill** on Tuesday, March 26, 2013 at 8:02pm.

P(x)- .25, .05, .55, .15

- Statistics -
**PsyDAG**, Wednesday, March 27, 2013 at 2:08pmFind 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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