A correlation coefficient can be used when both variables use:

A) different scales of measurement.
B) nominal scale properties.
C) interval or ratio scale properties.
D) ordinal and interval scale properties.

Correlation Coefficient

A statistical measure that describes the extent to which two variables change together and thus how well one variable can predict the other.

Nominal Scale

A level of measurement used for data that can be categorized but not logically ordered, involving labels or names without inherent numerical value.

Variables

Variables are elements or factors that can change and affect the outcome of scientific experiments or research studies.