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Chapter 11: Q. 1 (page 614)
You want to make a stem-and-leaf plot of the data values 90, 93, 85, 86, and 74. What numbers would you use as the stems?
The stem values for stem-and-leaf are.
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In Exercises 6-8, tell whether the data are numerical or categorical. The tell which data display(s) you would use to display the data. Explain your reasoning.
A coach recorded the number of goals scored by each member of a hockey team.
Your bowling scores in your last 15 games are as follows:
1.Make a frequency table and histogram for your bowling scores.
2. Interpret the histogram. What scores do you usually bowl? Are your scores distributed evenly over all intervals? How unusual is it for you to bowl a game over 150?
Compare stem-and-leaf plots and histograms. How are they alike? What advantages do stem-and-leaf plots have over histograms? What advantages do histograms have over stem-and-leaf plots?
For the period, the table below shows the number of earthquakes with magnitudes greater thanon the Richter scale. In 1999 there were 11 earthquakes greater thanon the Richter scale. How did 1999 compare with the preceding years?
Higher-Magnitude Earthquakes Per Year |
18, 14, 10, 15, 8, 15, 6, 11, 8, 7, 13, 10, 23, 16, 15, 25, 22, 20, 16 |
Write the fraction as a percent.
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