California Assessment of Student Performance and Progress (CAASPP) Math Practice Exam

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If the data set is 3, 5, 7, 7, 8, what is the mode?

  1. 3

  2. 5

  3. 7

  4. 8

The correct answer is: 7

The mode of a data set is defined as the number that appears most frequently. In the given set of numbers, 3, 5, 7, 7, 8, the number 7 appears twice, which is more than any other number in the set. All the other numbers occur only once. Therefore, the mode of this data set is 7, as it is the only value that has the highest frequency of occurrence.

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