A Pearson r correlation is best used for data that is
A) only ordinal level.
B) both ordinal and interval level.
C) only interval level.
D) both interval and ratio.

Question

Quizplus · Accepted Answer

Pearson r correlation is best used for data that is either interval or ratio level. This is because both of these levels of data involve continuous numerical measurements, allowing for meaningful calculations of correlation coefficients. Data at the ordinal level, while also ordered, does not have a consistent unit of measurement and therefore may not be as suitable for Pearson r correlation.

A Pearson R Correlation Is Best Used for Data That