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View Full Version : Statistics/normal curve/standard deviation

Dreamstarr03
Jul 29, 2007, 09:45 AM
In a normal curve approximately _____percent of cases are lower than two standard deviations below the mean?
galactus
Jul 29, 2007, 09:56 AM
Just take a look at the standard normal curve.
mathtutor
Jul 30, 2007, 05:36 AM
2.5