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July 28, 2014

July 28, 2014

Posted by **Anonymous** on Friday, December 6, 2013 at 3:39pm.

- statistics -
**Sam**, Friday, December 6, 2013 at 4:10pmWhere are the scores

- statistics -
**PsyDAG**, Saturday, December 7, 2013 at 7:43pmFind 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

95% = mean ± 1.96 SEm

SEm = SD/√n

You can do the calculations.

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