In a contingency table,when all the expected frequencies equal the observed frequencies the calculated $\chi$² statistic equals zero.

Question

Quizplus · Accepted Answer

The formula to calculate chi-square statistic is based on the deviation between the expected and observed frequencies. When all the expected frequencies equal the observed frequencies, there is no deviation and hence the value of chi-square statistic is zero.

In a Contingency Table,when All the Expected Frequencies Equal the Observed