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QuizMultiple Choice

Evaluating Scientific Explanations — Unit test

Question 1 • Physical Science Sem 1 (2003310) BCPS 2026-27

Which best describes the purpose of bar graphs?

Answer
A
They show changes over a period of time.
B
They compare quantities for particular categories.
C
They show the relationship among parts of a whole.
D
They compare ranges as continuous data.

Explanation

Bar graphs use separate bars to compare amounts across distinct categories, such as the number of students in different grade levels. Choice B, “They compare quantities for particular categories,” describes this purpose. Changes over time are often shown with line graphs, while parts of a whole are often shown with circle graphs.

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