Question

the parallel boxplots below display the quiz grades (out of 30) for two of mrs. smiths statistics classes. which class performed better on this quiz? class 1 class 2 12 14 16 18 20 22 24 26 28 30 quiz grades class 1 performed better because their scores ranged from 12 to 30. class 1 performed better because their median score is higher than the median score for class 2. class 2 performed better because their median score is higher than the median score for class 1. class 2 performed better because the distribution of quiz grades is approximately symmetric.

Explanation:

Step1: Recall box - plot properties

The median is represented by the line inside the box of a box - plot. A higher median generally indicates better performance.

Step2: Compare medians

By observing the box - plots, the median of Class 1 is higher than the median of Class 2.

Answer:

Class 1 performed better because their median score is higher than the median score for class 2.