Two nominal variables are to _____ coefficient as two ordinal ...

[kshipps]

Two nominal variables are to _____ coefficient as two ordinal variables are to _____ coefficient.
 
  a. Pearson product-moment correlation; Spearman rank-order correlation
  b. Spearman rank-order correlation; Pearson product-moment correlation
  c. Phi; Spearman rank-order correlation
  d. Point-biserial correlation; Spearman rank-order correlation

Question 2

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

[JaynaD87]

Answer to Question 1

c

Answer to Question 2

b