Gretchen wanted to see if given a sample of teachers' that graduated from colleges and Universities, GPA in college was related to starting salary as a teacher. Which correlation coefficient should Gretchen calculate?
A) Pearson r
B) eta
C) Kendall's tau
D) Spearman rho

Question

Quizplus · Accepted Answer

Pearson r (or Pearson's correlation coefficient) is the most appropriate choice for analyzing the relationship between two continuous variables, such as GPA and starting salary. It measures the strength and direction of the linear relationship between two variables. Both Eta and Kendall's tau are measures of association, but they are more appropriate for ordinal or categorical data, respectively. Spearman rho is also a measure of association, but it is more appropriate when the relationship between two variables is non-linear or when the data is ordinal.

Gretchen Wanted to See If Given a Sample of Teachers