Problem 13 presented data showing a positive rela- tionship between weight and income for a sample of professional men. However, weight was coded in five categories that could be viewed as an ordinal scale rather than an interval or ratio scale. If so, a Spearman correlation is more appropriate than a Pearson correlation. 22. a. Convert the weights and the incomes into ranks and compute the Spearman correlation for the scores in problem 13. b. Is the Spearman correlation large enough to be significant?