what kind of variables are classified in a contingency table

what kind of variables are classified in a contingency table

Solution

Normally gender, citywise, groupwise, districtwise data compare in a contingency table.

Null hypothesis would be all groups are equal

and alternate atleast two not equal

Chi square test is used two tailed

Contingency table prepared in a matrix form rxc

Degree of freedom =(r-1)(c-1)

Observed and expected values are calculated for each box and chi square arrived at