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Problem 11 - Olympiad
What is the main purpose of a double bar graph?
A. To show data over time
B. To compare two sets of data simultaneously
C. To show parts of a whole
D. To display continuous data
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Correct: B
A double bar graph is used to compare two different sets of data for the same categories. For instance, it can compare performance in two different years or compare two different groups across various categories.