College Math CLEP Prep Practice Exam

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Which type of data is most commonly represented using a bar graph?

Categorical
Quantitative
Nominal
Ordinal

The correct answer is: Categorical

A bar graph is used to display categorical data, which means data that can be organized into categories or groups. Each category is represented by a bar and the height of the bar shows the frequency or count of that category. Categorical data is different from quantitative data, which is numerical and can be measured and compared. Nominal and ordinal data are subtypes of categorical data, but they are not commonly represented using a bar graph. Nominal data is descriptive and lacks any order or hierarchy, while ordinal data has a specific order or ranking. Therefore, B, C, and D are incorrect as they are not the most commonly represented types of data in a bar graph.