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Exploring Stem and Leaf Plots for Data Analysis

Learn about stem and leaf plots, a useful data visualization tool for sorting and graphing data. Follow steps to create stem and leaf plots for various datasets and compare distributions effectively.

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Exploring Stem and Leaf Plots for Data Analysis

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  1. Chapter 2.3 Stem and Leaf Plots

  2. Stem and Leaf Plots • A stem and leaf plot is a data plot that uses part of the data value as the stem and part of the data value as the leaf to form groups or classes. • It is a method of both sorting and graphing data

  3. Steps for making a stem and leaf plot • Arrange the data in order • Separate data according to the first digit • Make a display by using the leading digit as the stem and the trailing digit as a leaf.

  4. At an outpatient testing center, the number of cardiograms performed each day for 20 days is shown. Construct a stem and leaf plot for the data.

  5. An insurance company researcher conducted a survey on the number of car thefts in a large city for a period of 30 days last summer. The raw data are shown. Construct a stem and leaf plot by using classes 50-54, 55-59, 60-64, 65-69, 70-74, 75-79.

  6. The number of stories in two selected samples of tall building in Atlanta and Philadelphia is shown. Construct a back-to-back stem and leaf plot and compare the distributions

  7. Back-to-Back stem and leaf plot of stories of buildings in 2 cities

  8. Try it! • Pg. 83 #1-7

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