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AP Statistics 1.4 B Justify a Claim Using Categorical One Variable Graphical Representations Questions

Practise using categorical bar charts to justify only the claims supported by displayed proportions, while separating percentage comparisons from unknown counts.

Syllabus
Effective Fall 2026
Course
AP Statistics

Exam points

  • Use bar heights or percentages to justify a category claim that must be true.
  • Reject raw-count comparisons when the chart gives proportions but group totals are missing.

AP Statistics 1.4 B Justify a Claim Using Categorical One Variable Graphical Representations Questions question 1

[Maximum number: 1]

Based on the bar chart, which of the following statements must be true?

A

Less than half of the students in the 10th grade indicated that they regularly rode the bus to school.

B

At least 20\% of students from each grade level indicated that they regularly rode the bus to school.

C

The number of students from the 9th grade who indicated that they regularly rode the bus to school is greater than the number of students from the 10th grade who indicated that they regularly rode the bus to school.

D

The 12th graders had the least number of students who indicated that they regularly rode the bus to school.

E

The 9th graders had the greatest percentage of students who indicated that they regularly rode the bus to school.

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