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

Multiple Choice

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.