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January 26, 2015

January 26, 2015

Posted by **Gee** on Thursday, September 6, 2012 at 12:54pm.

- statistics -
**MathGuru**, Thursday, September 6, 2012 at 6:18pmUse z-scores.

Formula:

z = (x - mean)/sd

With your data:

z = (520 - 516)/20

I'll let you finish the calculation.

- statistics -
**Anonymous**, Monday, September 10, 2012 at 12:00pm0.2

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