Question 1

Based on the boxplot comparing GPA across academic levels, which group appears to have the highest median GPA?

Accepted Answer

Senior

Question 2

Which academic level shows the greatest variability in GPA, as indicated by the length of the box (IQR) in the boxplot?

Accepted Answer

Freshman

Question 3

What does the line inside each box of the boxplot represent?

Accepted Answer

The median GPA for that academic level

Question 4

If you wanted to compare the spread of GPA scores between academic levels, which feature of the boxplot would you examine?

Accepted Answer

The height of the box (IQR) and the length of the whiskers

Question 5

Suppose the boxplot for Juniors shows a longer upper whisker than lower whisker. What does this suggest about the distribution of GPA for Juniors?

Accepted Answer

The distribution is right-skewed

Question 6

If the median line is closer to the bottom of the box for Sophomores, what does this indicate about the distribution of their GPA?

Accepted Answer

The distribution is left-skewed

Question 7

Which academic level appears to have the lowest minimum GPA, based on the boxplot?

Accepted Answer

Freshman

Question 8

What can you infer if the boxplot for Seniors has no dots outside the whiskers?

Accepted Answer

There are no outliers in the Senior GPA data

Question 9

If the IQR for Freshmen is larger than for other groups, what does this mean?

Accepted Answer

Freshmen have more variability in GPA

Question 10

Why might side-by-side boxplots be useful for comparing GPA across academic levels?

Accepted Answer

They allow for comparison of center, spread, and outliers between groups

Describing and Summarizing Data: Categorical and Quantitative Variables

Study Guide - Practice Questions