UniODA vs. Chi-Square: Ordinal Data Sometimes Feign Categorical
Paul R. Yarnold, Ph.D. and Robert C. Soltysik, M.S.
Optimal Data Analysis, LLC
Assessed using perhaps the most widely used type of measurement scale in all science, ordinal data are often misidentified as being categorical, and incorrectly analyzed by chi-square analysis. Three examples drawn from the literature are reanalyzed.