normal distribution

<statistics> (Or "Gaussian distribution", "bell curve") The frequency distribution of many natural phenomena such as the height of people of a certain age and sex. The formula looks something like:

	P(x) = e^(((x-m)/s)^2)
where P(x) is the probability of a measurement x, m is the mean value of x and s is the standard deviation.

(18 Mar 1995)