The graphs below show the average test scores of Class A and Class B over three consecutive years.

(a)
What feature of the graph misleads readers to think that the scores of Class A in 2022 had increased to 6 times that in 2024?
(b)
Hailey claims that the scores of Class A and Class B shows the same improvement from 2022 to 2024.
Do you agree?
Explain your answer.

Misinterpretation Analysis interpretation 中文

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Worked solution

10(a)

1. State the misleading feature of the graph

The vertical axis does not start at $0$ ; it is cut off/truncated, with the scale shown only near $65$ to $70$ . This exaggerates the apparent difference in the bar heights.

Answer

The vertical axis is truncated and does not start from $0$ ; it starts around $65$ , making the increase in Class A's scores look much larger than it really is.

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The graphs below show the average test scores of Class A and Class B over three consecutive years.

Worked solution

10(a)

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