Normal distribution

Normal distribution function.

Normal(mean,stddev)

Creates a normal or Gaussian probability distribution with mean and standard deviation stddev. The standard deviation must be 0 or greater. The range [mean-stddev, mean+stddev] encloses about 68% of the probability.

When to use

Use a normal distribution if the uncertain quantity is unimodal and symmetric and the upper and lower bounds are unknown, possibly very large or very small (unbounded). This distribution is particularly appropriate if you believe that the uncertain quantity is the sum or average of a large number of independent, random quantities.

Library

Distributions

Example

Normal(30,5) →

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See Also

• CumNormal, CumNormalInv -- the analytic density functions
• BiNormal, Gaussian -- multi-variate Normal distributions