Question

a data value x is an outlier if if: x < q1 - 1.5(iqr) or if: x > q3 + 1.5(iqr). depends on the data size sometimes true false always true

Explanation:

Step1: Recall outlier definition

The 1.5 × IQR (Inter - Quartile Range) rule is a commonly used method to identify outliers in a data - set. According to this rule, a data value \(x\) is an outlier if \(x<Q1 - 1.5(IQR)\) (lower outlier) or \(x>Q3 + 1.5(IQR)\) (upper outlier). This is a standard rule and does not depend on the data size.

Answer:

Always true