A researcher is interested in understanding the IQ scores of delinquents compared to non-delinquents. This variable may best be described as being measured at the ______ level of measurement.
A) nominal
B) ordinal
C) interval
D) ratio

Question

Quizplus · Accepted Answer

IQ scores are measured at the interval level. This is because IQ scores are measured on a continuous scale with equal intervals between the numbers. However, IQ scores do not have a true zero point, as a score of 0 does not indicate an absence of intelligence. Therefore, they cannot be measured at the ratio level. Nor is there a natural order or ranking to IQ scores that would allow them to be measured at the ordinal level. Finally, IQ scores are not categorical data and do not fit the criteria for measurement at the nominal level.

A Researcher Is Interested in Understanding the IQ Scores of Delinquents