Posted by **Sam** on Wednesday, November 11, 2009 at 11:37pm.

The heights of women in the US approximately follow a bell shaped curve. What do you think that means?

- Stats -
**drwls**, Thursday, November 12, 2009 at 7:10am
It means that heights (h) are distributed according to a formula

N(h) = exp-[(h-m)/a)]^2 , where

m is the most probable (and average) height

a is the standard deviation, sometimes called sigma

If you plot N vs. h, it looks like an upside-down bell.

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