What assumption about the nature of a relationship is necessary for testing Pearson's r for significance?
A) The relationship must be positive.
B) The relationship must be linear.
C) The relationship cannot be homoscedastic.
D) The relationship can include only one interval-ratio variable.

Question

Quizplus · Accepted Answer

Pearson's r assumes that the relationship between the two variables is linear, meaning that the data points should form a straight line when plotted on a scatterplot.

What Assumption About the Nature of a Relationship Is Necessary