Charles Spearman is credited with
A) developing a type of correlation coefficient.
B) developing a way to predict the accuracy of a test.
C) developing factor analysis.
D) All of these

Question

Quizplus · Accepted Answer

Charles Spearman developed all three: a type of correlation coefficient (Spearman's rank correlation coefficient), a way to predict the accuracy of a test (Spearman-Brown prediction formula), and factor analysis.

Charles Spearman Is Credited with