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April 18, 2015

April 18, 2015

Posted by **Whitney** on Wednesday, March 17, 2010 at 4:28pm.

- statistics -
**PsyDAG**, Thursday, March 18, 2010 at 1:48pmZ = (x - mean)/standard deviation

In a table labeled something like "areas under normal distribution," look for Z score at 75th percentile (third quartile). Insert values into the above equation and solve.

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