Which of the following is used to identify outliers in a set of data?

A common rule identifies potential outliers as data values below Q1 − 1.5 × IQR or above Q3 + 1.5 × IQR, where IQR is the interquartile range. Thus, the relevant quantity is 1.5 times the IQR, not the mean, median, or full range.

AI-written and checked against the verified answer.