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Home > CC1 > Chapter 8 > Lesson 8.1.5 > Problem 8-66


Jerome is keeping track of how many books he and his friends have read during the first days of school. The numbers of books are , , , , , , , , , , , , and . Help Jerome present the data to his teacher.  

  1. How many pieces of data, or observations, does Jerome have?

    Refer to the data.

  2. Make a stem-and-leaf plot of the data.

  3. Jerome wants to present the data with a plot that makes it possible to calculate the mean and the median. Can he do this with a stem-and-leaf plot? He is not asking you to calculate them, but he wants you to tell him if it is possible and why.

  • Does the stem-and-leaf plot show all of the data points?

  1. Use the stem-and-leaf plot to describe how the data is spread. That is, is it spread out, or is it concentrated mostly in a narrow range?

    Where are most of the values concentrated?

  2. Would it be helpful for Jerome to create a dot plot to display and analyze the data from problem 8-66? Why or why not?

    Would it be practical to put this information into a dot plot?

    No, there are too many data points that do not repeat.

Make a stem-and-leaf plot using the eTool below.
Click the link at right for the full version of the eTool: 8-66 HW eTool