What is the level of measurement for the following variable: Educational aptitude measured with a respondent's IQ score
A) Nominal
B) Ordinal
C) Interval
D) Ratio

Question

Quizplus · Accepted Answer

Educational aptitude measured with a respondent's IQ score is an example of interval level of measurement because IQ scores are continuous and have equal intervals between each score point. However, IQ scores do not have a true zero point since it is not possible to have an IQ score of zero. Therefore, it is not a ratio level of measurement. It is also not nominal or ordinal since IQ scores cannot be put into categories or ranked hierarchically.

What Is the Level of Measurement for the Following Variable