A researcher wants to measure the strength of the association between income (measured in dollars per year) and education (measured in number of years of formal schooling). Which of the following would be the most appropriate measure of association?
A) The slope (b)
B) Gamma
C) Chi square
D) Pearson's r

Question

Quizplus · Accepted Answer

Pearson's r is the most appropriate measure of association between two quantitative variables, such as income and education. The slope (b) is a measure of the effect of one variable on another in a regression model, but does not measure association directly. Gamma is a measure of association between two ordinal variables. Chi square is a measure of association between two categorical variables.

A Researcher Wants to Measure the Strength of the Association