For which of these research situations would you MOST likely calculate a correlation coefficient?

A) independent variable = blood type; dependent variable = political affiliation
B) independent variable = height; dependent variable = salary
C) independent variable = ethnicity; dependent variable = favorite food
D) independent variable = gender; dependent variable = type of car owned

Correlation Coefficient

A numerical measure that indicates the extent of a linear relationship between two variables, ranging from -1 to 1.

Independent Variable

The variable in an experiment that is manipulated or changed to observe its effect on the dependent variable.

Dependent Variable

In statistical modeling, this is the variable being tested and measured, often considered the outcome variable that researchers are interested in explaining or predicting.