Cumulative Distribution Function Calculator
- Chi-Square Distribution -

   Define the Chi-Square random variable by setting the k>0 degrees of freedom in the field below. Click Calculate! and find out the value at x of the cumulative distribution function for that Chi-Square random variable.

The Cumulative Distribution Function of a Chi-Square random variable is defined by:

       where γ(k,z) is the lower incomplete Gamma function and Γ(k/2) is the Gamma function.