# normal distribution

noun, Statistics.
1.
a theoretical frequency distribution represented by a normal curve.
Also called Gaussian distribution.
Origin of normal distribution
1895-1900
1895-1900
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for normal distribution
Historical Examples
• The frequency distribution of breeding activity in birds is described by a nonlinear curve (a normal distribution is nonlinear).

Richard F. Johnston
• The idea is but the shadow of the theories of normal distribution mentioned in preceding chapters.

Herbert Feis
• Such boon-work was considered as a kind of surplus demand; it exceeded the normal distribution of work.

British Dictionary definitions for normal distribution

## normal distribution

noun
1.
(statistics) a continuous distribution of a random variable with its mean, median, and mode equal, the probability density function of which is given by (exp-[(x–μ)²/2σ²]/σ√(2π)) where μ is the mean and σ² the variance Also called Gaussian distribution
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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normal distribution in Science
 normal distribution   (nôr'məl)    A theoretical frequency distribution for a set of variable data, usually represented by a bell-shaped curve symmetrical about the mean.
The American Heritage® Science Dictionary
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normal distribution in Technology

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.
(2003-10-25)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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### Difficulty index for normal distribution

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### Word Value for normal

8
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