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added formula for pdf
The '''normal distribution''' is another name for the '''[[bell curve]]'''.
The '''normal distribution''' is another name for the '''[[bell curve]]'''.
The normal probability density function (PDF) is
:<math>
p(x)=\frac{1}{\sqrt{2\pi\sigma^2}}
\exp\left[-\frac{1}{2\sigma^2}\left(x-\mu\right)^2\right]
</math>
where
<math>\mu</math> is the [[mean]] and <math>\sigma^2</math> is the [[variance]].
[[category:Probability and Statistics]]
[[category:Probability and Statistics]]