An educational psychologist believes that the quality of a p

An educational psychologist believes that the quality of a principal at a grade school affects the students

Solution

b) Spearman Correlation

As Spearman\'s rank-order correlation is the nonparametric version of the Pearson product-moment correlation. Spearman\'s correlation coefficient, ( , also signified by r_s) measures the strength of association between two ranked variables.