Summary Statistics for a Quantitative Variable

AP Statistics· difficulty 2/5

The frequency table summarizes a small data set of 10 observations.

Frequency Table Value Frequency 2 3 4 5 6 2

What is the mean?

  • A

    3.8

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  • B

    4.0

  • C

    4.5

  • D

    5.0

Explanation

Sum = 2(3) + 4(5) + 6(2) = 6 + 20 + 12 = 38. Mean = 38/10 = 3.8.

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