Chi-square Distribution

Chi-square Distribution Calculator

Calculate chi-square distribution or inverse chi-square distribution

Chi-square Distribution
example digits=2: (0.001234 => 0.0012)
degrees of freedom
Choose X or P(x≤X)
T Distribution (T-student)


Chi-Square distribution is used for a normally distributed population.

Let Z1, Z2,....Zn be independent standard random variables.
Let X= [Z1^2+ Z2^2+....+Zn^2].
X distribute as Chi-square random variable with n degrees of freedom.