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July 23, 2014

July 23, 2014

Posted by **Kristie** on Monday, November 28, 2011 at 12:36pm.

- statistics -
**PsyDAG**, Tuesday, November 29, 2011 at 12:04pmQ3 = 75th percentile

Z = (score-mean)/SD

Standard deviation = square root of variance

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score = mean + .25. Insert values into above equation and solve.

I'll leave the interpretation to you.

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