normal distribution | computing dictionary |

<statistics> (Or "Gaussian distribution") The frequency distribution of many natural phenomena such as the height or intelligence 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.

Also known as a "bell curve" because of its shape.

(01 Aug 2003)

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normal distribution | education dictionary |

<statistics> The range of scores distributed in a bell-shape with equal numbers above and below the mean. There are more scores concentrated in the middle than at the ends. Also called a bell curve.

(14 Jan 2009)

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normal distribution | medical dictionary |

Continuous frequency distribution of infinite range. Its properties are as follows: 1) continuous, symmetrical distribution with both tails extending to infinity; 2) arithmetic mean, mode, and median identical; and 3) shape completely determined by the mean and standard deviation.

(12 Dec 1998)

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