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This is documentation for an old release of SciPy (version 0.13.0). Read this page in the documentation of the latest stable release (version 1.15.0).

scipy.special.chdtr

scipy.special.chdtr(v, x) Returns the area under the left hand tail (from 0 to x) of the Chi square probability density function with v degrees of freedom: 1/(2**(v/2) * gamma(v/2)) * integral(t**(v/2-1) * exp(-t/2), t=0..x) = <ufunc 'chdtr'>

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