normal distribution

American  

noun

Statistics.

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

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normal distribution British  

noun

1. Also called: Gaussian distribution.  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

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normal distribution Scientific  

/ nôr′məl /

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

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Etymology

Origin of normal distribution

First recorded in 1895–1900

Example Sentences

“Since there is an equal chance of a marble bouncing left or right at each peg, the marble stacks in the bins below will, on average, form the classic bell-shaped curve of normal distribution.”

From Literature

Since humans are bad at thinking probabilistically, we’ll be tempted to deem those folks flipping geniuses, rather than see their achievements as predictable points on a normal distribution of outcomes.

From Washington Post

Others assume they will be mostly through the pandemic and back to a more normal distribution of classes, fewer capacity restrictions and more events.

From Washington Times

Retailers, even those who have imposed toilet paper limits per customer, are clamoring for more product, to the point of short-circuiting the normal distribution routes to send trucks straight to factories to replenish supplies.

From Los Angeles Times

The random motion of the balls typically leads to a normal distribution in the slots: most balls fall near the center, and fewer fall toward the sides, tapering off at the edges.

From Scientific American