chi2-distribution

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chi²-distribution/b>

(Math | Distributions | chi²-Distributions)

chi-distributions
The chi2 -distribution, with n degrees of freedom, is given by the equation:

f() = ()^{^(n/2

- 1)} e^{^(-}/ 2 ⁾ 2^{^(-n/2)} / (n/2)

The area within an interval (a, inf

) = integral

) d

(n/2, a/2) /

(n/2) (See also Gamma function)