CDF

Returns the area from zero to x under the beta density.

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CDF Returns the area from zero to x under the beta density.	<script type="text/javascript" src="http://www.codecogs.com/ic_json-180&u=5"></script>

CDF Calculator

The CDF of the Beta distribution is identical to the regularized beta function:

$CDF(x; a, b) = I(x; a, b) = \frac{B(x; a, b)} {B(a, b)}$

where $B(x; a, b)$ is the incomplete beta function and $B(a, b)$ is the (complete) beta function.

An illustration is given below:

$\graph x=0:1, a=2, b=1:5:5$

Cephes Math Library Release 2.8: June, 2000

Source code is available when you buy a Commercial licence.

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