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January 31, 2015

January 31, 2015

Posted by **Anonymous** on Thursday, August 19, 2010 at 11:27pm.

have z-scores between -1 and +1?

- MATH -
**drwls**, Friday, August 20, 2010 at 7:27am68.27% of the population is between z= -1 and z = 1. That is the fraction within "one sigma" of the mean, for any normal distribution.

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