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*The test statistic is:
*The test statistic is:
<math>\chi^2=\sum\frac{(Oi-Ei)^2}{Ei}</math>
<math>\chi^2=\sum\frac{(Oi-Ei)^2}{Ei}</math>
The degrees of freedom is:<math> (r–1)(c–1)</math>
The degrees of freedom is <math> (r–1)(c–1)</math>
*r = No. of rows
*r = No. of rows
*c = No. of columns
*c = No. of columns