Function for generating values from chi-square distributions.
Interface
chisq(n:int) : real
where n>=1. It returns a drawing from a chi-square distribution with
n degrees of freedom.
The sum of the squares of n independent normally distributed random
variables with mean 0.0 and standard deviation 1.0 is a chi-squared distribution with n degrees of freedom.
It raises Chisq exception if n<1.
Characteristics
- Mean:
n - Variance:
2n
Density functions for chi-square distributions:
Density functions for chi-square distributions
Example
An example for this distribution has been omitted because it is rarely found in nature. Instead, the distribution is used when doing statistical tests.
Related pages
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