Chi Square Distribution Curve. The chi square distribution is a continuous probability distribution with the values ranging from 0 to infinity in the positive direction. Each distribution is defined by the degrees of freedom.
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. Such application tests are almost always right tailed tests.
No matter how many degrees of freedom there are the shape of a chi square distribution is always.
For df 90 the curve approximates the normal distribution. Normalsize chi squared distribution x 2 x nu 1 probability density. This distribution is sometimes called the central chi square distribution a s. Such application tests are almost always right tailed tests.
