The left side of the box in a boxplot is the first quartile and the right side of the box in a boxplot is the third quartile, so the width of the box is the interquartile range.

Question

Quizplus · Accepted Answer

This statement is true. The interquartile range (IQR) is the range of the middle 50% of the data, which is represented by the box in a boxplot. The left side of the box represents the first quartile (Q1), which is the value separating the lowest 25% of the data from the rest, and the right side represents the third quartile (Q3), which is the value separating the highest 25% of the data from the rest. Therefore, the width of the box is equal to the IQR, which is the difference between Q3 and Q1.

The Left Side of the Box in a Boxplot Is