Chi Square Distribution Curve. The chi square distribution curve is skewed to the right and its shape depends on the degrees of freedom df. Chi square is a test of dependence or independence.
The chi square distribution looks like a skewed bell curve. Such application tests are almost always right tailed tests. Test statistics based on the chi square distribution are always greater than or equal to zero.
Properties of chi square distribution.
Chi square is a test of dependence or independence. In this graph each curve represents the chi square distribution for a different degree of freedom. In probability theory and statistics the chi square distribution with k degrees of freedom is the distribution of a sum of the squares of k independent standard normal random variables. Test statistics based on the chi square distribution are always greater than or equal to zero.
