School Improvement in Maryland

Sample Item
Selected Response Item for Grade 7

Standard 4.0 Knowledge of Statistics

Topic A. Data Displays

Indicator 1. Organize and display data

Objective a. Organize and display data using back-to-back stem-and-leaf plots

Assessment limit: Use no more than 20 data points using whole numbers (0–99)

The leading major league home run hitters of the 2002 season are displayed on the back-to-back stem-and-leaf plot below. The stem-and-leaf plot has an error.

Which sentence best describes the error in the stem-and-leaf plot?

  1. The stem-and-leaf plot should have only one key.
  2. The digits on the left side of the plot are in the wrong order.
  3. The key for the American League is incorrect.
  4. The digits should be shown only once to show repeated numbers in a data set.

Correct Answer
B. The digits on the left side of the plot are in the wrong order.
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