Normal distribution/Definition: Difference between revisions

Latest revision as of 11:25, 1 July 2009

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A definition or brief description of Normal distribution.

a symmetrical bell-shaped probability distribution representing the frequency of random variations of a quantity from its mean.

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 <noinclude>{{Subpages}}</noinclude>
-a symmetrical bell-shaped probability distribution having the probability function
+a symmetrical bell-shaped probability distribution representing the frequency of random variations of a quantity from its mean.
-:<math>
-f(x;\mu,\sigma) =
-\frac{1}{\sigma\sqrt{2\pi}} \, e^{ -\frac{(x- \mu)^2}{2\sigma^2}},</math> where <math> \scriptstyle{\sigma} \ </math> is the ''standard deviation'', and, <math> \scriptstyle{\mu} \ </math> is the mean.