Normal distribution

The normal distribution, also called Gaussian distribution, is an extremely important probability distribution in many fields.

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It is a family of distributions of the same general form, differing in their location and scale parameters: the mean ("average") and standard deviation ("variability"), respectively.

Related Topics:
Parameter - Mean - Standard deviation

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The standard normal distribution is the normal distribution with a mean of zero and a standard deviation of one (the green curves in the plots to the right).

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It is often called the bell curve because the graph of its probability density resembles a bell.

Related Topics:
Probability density - Bell

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