Representing a Quantitative Variable with Graphs

AP Statistics· difficulty 3/5

A teacher made the stemplot of scores from a 23-student class.

Stemplot of Test Scores Stem | Leaf 5 | 2 5 6 | 0 3 7 8 7 | 1 2 4 5 6 8 9 8 | 0 1 3 4 5 7 9 | 2 4 Key: 5|2 = 52

Which best describes the shape?

  • A

    Roughly symmetric, unimodal

    check_circle
  • B

    Strongly skewed right

  • C

    Uniform

  • D

    Bimodal

Explanation

The leaf counts increase to a single peak in the 70s and decrease similarly on either side — roughly symmetric and unimodal.

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