Chi Square Distribution Formula. The formula for the incomplete gamma function is. This makes a chi 2 distribution a gamma distribution with theta 2 and alpha r 2 where r is the number of degrees of freedom.
Displaystyle q sim chi 2 k text or q sim chi k 2 the chi square distribution has one parameter. The formula for the cumulative distribution function of the chi square distribution is f x frac gamma frac nu 2 frac x 2 gamma frac nu 2. For example cell 1 male full stop.
Now calculate chi square using the following formula.
For example cell 1 male full stop. For example cell 1 male full stop. The chi square statistic measures the difference between actual and expected counts in a statistical experiment. The formula for the cumulative distribution function of the chi square distribution is f x frac gamma frac nu 2 frac x 2 gamma frac nu 2.
