If both variables are measured on a nominal scale,what type of correlation coefficient is appropriate?
A)Spearman's rank-order correlation coefficient
B)phi coefficient
C)point-biserial correlation coefficient
D)none,because correlations cannot be computed on nominal data

Question

Quizplus · Accepted Answer

The phi coefficient is the appropriate correlation coefficient for two nominal variables. The coefficient is calculated by dividing the difference between the observed frequency of agreement and the frequency expected by chance by the maximum possible difference between the observed frequency and expected frequency.

If Both Variables Are Measured on a Nominal Scale,what Type