Before a chi-square test is performed, what should be inspected by the researcher?
A) Contingency table to inspect the expected frequencies.
B) Kolmogorov-Smirnov test to evaluate whether the data are normally distributed.
C) Shapiro-Wilks test to evaluate whether the data are normally distributed.
D) A histogram or box-whisker plot to inspect the distribution of the data.

Question

Quizplus · Accepted Answer

Before conducting a chi-square test, the researcher should inspect the contingency table to ensure that the expected frequencies are not too small, as this can affect the validity of the test. Small expected frequencies can result in an inaccurate assessment of the significance level and can lead to incorrect conclusions.

Before a Chi-Square Test Is Performed, What Should Be Inspected