# normal distribution

## normal distribution

noun Statistics.
a theoretical frequency distribution represented by a normal curve.
Also called

Origin:
1895–1900

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To normal distribution
Collins
World English Dictionary
 normal distribution —n statistics Also called: Gaussian distribution 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

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
 normal distribution   (nôr'məl)  Pronunciation Key  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
Cite This Source
FOLDOC
Computing Dictionary

### normal distribution definition

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
Cite This Source
Example sentences
Innovations to this process are drawn randomly each period from a normal
distribution.
But he had problems fitting people's heights and weights in a population into
such a normal distribution.
Kurtosis is a measure of whether the data are peaked or flat relative to a
normal distribution.
In all cases, the chi-square test was applied to test for a normal distribution.
Nearby Words