When conducting a chi-square test to determine if there is a statistically significant association between categorical variables, which of the following steps is NOT part of the process?
a. Formulate the null and alternative hypotheses.
b. Calculate the expected frequencies for each category based on the null hypothesis.
c. Determine the correlation coefficient between the variables.
d. Compute the chi-square statistic and compare it to the critical value from the chi-square distribution.