Functions > Statistics > Probability Distributions > Chi-Squared Distribution
Chi-Squared Distribution
The following functions are associated with the chi-squared equation:
Click to copy this expression
dchisq(x, d)—Returns the probability density for value x.
pchisq(x, d)—Returns the cumulative probability distribution for value x.
qchisq(p, d)—Returns the inverse cumulative probability distribution for probability p.
rchisq(m, d)—Returns a vector of m random numbers having the chi-squared distribution.
x is a scalar or vector of real values, x ≥ 0. Negative values of x produce a result of zero.
d is a positive integer representing the degrees of freedom. While the distribution equation is meant to be formulated for integers, you can also use real values.
Γ is the Gamma function.
p is a real probability, 0 ≤ p ≤ 1.
m is an integer, m > 0.
Was this helpful?