normal distribution

noun

, Statistics.

1. a theoretical frequency distribution represented by a normal curve.

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 calledGaussian distribution

normal distribution

/ nôr′məl /

1. A theoretical frequency distribution for a set of variable data, usually represented by a bell-shaped curve symmetrical about the mean.

Word History and Origins

Origin of normal distribution¹

First recorded in 1895–1900

Example Sentences

A normal distribution would resemble a bell curve with a peak around three and a rapidly tapering tail in both directions, meaning the probability of an extreme event declines exponentially as the number of infections moves farther from the average.

From MIT Technology Review

The frequency distribution of breeding activity in birds is described by a nonlinear curve (a normal distribution is nonlinear).

From Project Gutenberg

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

From Project Gutenberg

The idea is but the shadow of the theories of normal distribution mentioned in preceding chapters.

From Project Gutenberg