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.

Question

Quizplus · Accepted Answer

Correlation coefficients are most appropriate for use when both variables exhibit interval or ratio scale properties. This is because these scales allow for a meaningful comparison of differences in magnitude between the values of the variables, which is necessary for calculating a correlation coefficient. Using nominal or ordinal scales does not allow for this type of comparison and may result in invalid or misleading correlation coefficients.

A Correlation Coefficient Can Be Used When Both Variables Use