When cell frequencies are small and 2x2 tables are used in the chi square test,an adjustment to the value of chi square can be made by applying
A)Yate's correction for continuity
B)a different value to the expected frequencies
C)a different value to the observed frequencies
D)any of these

Question

Quizplus · Accepted Answer

When cell frequencies are small, using 2x2 tables in the chi-square test leads to inaccurate results. Therefore, Yates' correction for continuity should be applied to adjust the value of chi-square. It reduces the degree of freedom by 1 and makes the test more accurate. The correction is used to account for the difference between the discrete distribution of the observed data and the continuous distribution assumed in the chi-square test. Therefore, Yates' correction is the best choice to adjust the value of chi-square when cell frequencies are small and 2x2 tables are used.

When Cell Frequencies Are Small and 2x2 Tables Are Used