Question

(a) which class had a smaller range of test scores? (b) which class had the highest test score? (c) which class had test scores with a larger interquartile range (iqr)? (d) which class had a higher median test score?

Explanation:

Step1: Analyze range

Range = maximum - minimum. For Class A, range is larger (max - min span more on the number line). For Class B, range is smaller.

Step2: Analyze highest score

Look at the end - point (maximum) of each box - plot. Class A has a higher maximum (farther right on the number line).

Step3: Analyze IQR

IQR is the length of the box in the box - plot. Class A's box (IQR) is longer.

Step4: Analyze median

Median is the line inside the box. Class B's median line is farther right (higher value).

Answer:

(a) Class B
(b) Class A
(c) Class A
(d) Class B