Function Reference: chi2cdf

statistics: p = chi2cdf (x, df)
statistics: p = chi2cdf (x, df, "upper")

Chi-square cumulative distribution function.

For each element of x, compute the cumulative distribution function (CDF) at x of the Chi-Squared distribution with df degrees of freedom. The chi-square density function with df degrees of freedom is the same as a gamma density function with parameters df/2 and 2.

The size of p is the common size of x and df. A scalar input functions as a constant matrix of the same size as the other input.

p = chi2cdf (x, df, "upper") computes the upper tail probability of the Chi-Squared distribution with df degrees of freedom at the values in x.

See also: chi2inv, chi2pdf, chi2rnd, chi2stat

Source Code: chi2cdf