The correlation between two nominal variables is measured using the _____ coefficient, and the correlation between two ordinal variables is measured using the _____ 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
Skin signs are objective evidence of an illness or disorder. They can be seen, measured, or felt.
Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are
Table - Correlation Analysis
Table - Correlation Analysis
Table - Correlation Analysis
Table - Correlation Analysis