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December 18, 2014

December 18, 2014

Posted by **srinu** on Saturday, November 20, 2010 at 9:32am.

- statistics -
**PsyDAG**, Saturday, November 20, 2010 at 9:42amAssuming that you are using P = .05, you would want 1.96 SEm (standard error of the mean) in either direction.

Mean ± 1.96SEm

SEm = SD/√(n-1)

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