Statistics Dictionary

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Normal Random Variable

The random variable X in the normal equation is called the normal random variable. The normal equation is shown below:

Normal equation. The value of the random variable Y is:

Y = [ 1/σ * sqrt(2π) ] * e (x - μ)2/2σ2

where X is a normal random variable, μ is the mean, σ is the standard deviation, π is approximately 3.14159, and e is approximately 2.71828.

See also:   Statistics Tutorial: Normal Distribution | Normal Calculator