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Lesson 21 · Statistics

Multiple Bar Diagrams

MathematicsSubject

13 minEstimated read

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Question 1 of 10

1A bar diagram works because people

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Lesson 21 topics

Frequency and Cumulative Frequency Multiple Bar Diagrams Arithmetic Mean

Quick Facts

Lesson: 21: Statistics
Topic: Multiple Bar Diagrams
Domain: Statistics

A bar diagram works because the eye judges length well. Equal widths, equal gaps and an axis starting at zero all exist to keep the lengths honest.

Study Tip

A chart can mislead while every printed number is correct. Cutting the axis makes a 10% difference look like three times, so check the axis before reading the bars.