When a correlation value among three or more interval-data variables is required, then the appropriate statistical test is
A) the multiple R
B) the Pearson r
C) the Spearman rs
D) the multi-factor V

Question

Quizplus · Accepted Answer

The multiple R is the most appropriate statistical test when a correlation value among three or more interval-data variables is required. The multiple R measures the linear relationship between several predictor variables and the outcome variable, providing a single correlation value that summarizes the overall strength and direction of the relationship. The Pearson r is only appropriate for measuring the linear relationship between two interval-data variables, while the Spearman rs is used when analyzing the relationship between two ordinal or ranked data variables. The multi-factor V is not a recognized statistical test for measuring correlation among multiple interval-data variables.

When a Correlation Value Among Three or More Interval-Data Variables