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Stem-and-Leaf Plots

Stem-and-Leaf Plots. Susan Phillips Lee’s Summit, MO. Stem-and-Leaf Plot. Uses place value to organize data Shows data in an organized way so it can be analyzed easily Organizes data so it is easier to find the median, mode, and range. Here are the scores for a freshman basketball team.

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Stem-and-Leaf Plots

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  1. Stem-and-Leaf Plots Susan Phillips Lee’s Summit, MO

  2. Stem-and-Leaf Plot • Uses place value to organize data • Shows data in an organized way so it can be analyzed easily • Organizes data so it is easier to find the median, mode, and range

  3. Here are the scores for a freshman basketball team • Here is the same data organized into a stem-and-leaf plot.

  4. Can you tell how the stem-and-leaf plot was made? The first number in the data is 27. Here is the 2 in the tens place. Here is the 7 in the ones place.

  5. The key shows us which place value the digits represent.

  6. The stems all represent tens place in this stem-and-leaf plot. The leaves all represent ones.

  7. Let’s try one together…

  8. Here are one student’s math test scores. Make a stem-and-leaf plot for this data. First, draw the dividing lines.

  9. Here are one student’s math test scores. Make a stem-and-leaf plot for this data. Stems Leaves Next, label the stem side and the leaf side.

  10. Here are one student’s math test scores. Make a stem-and-leaf plot for this data. Stems Leaves 7 5 Find the smallest piece of data and plot it on the grid.

  11. The 7 for the tens place is already there. We just add the 9. Here are one student’s math test scores. Make a stem-and-leaf plot for this data. Stems Leaves 7 5 9 Find the next smallest piece of data and plot it on the grid.

  12. Continue with this process until you have entered all the data. Stems Leaves 7 5 9 8 3 4 6 6 8 9 1 4 9

  13. Remember to add a title. Test Scores Stems Leaves 7 5 9 8 3 4 6 6 8 9 1 4 9

  14. Key: 7 5 means 75 Don’t forget the key! Test Scores Stems Leaves 7 5 9 8 3 4 6 6 8 9 1 4 9

  15. You just completed a stem-and-leaf plot!

  16. Now, try it on your own…

  17. This table shows the times in seconds and hundredths of seconds for the women’s 500-meter speed-skating competition in the 2002 Winter Olympics.

  18. Use this data to make a stem-and-leaf plot. 2002 Winter Olympics 500-Meter Speed-Skating Times in Seconds

  19. 2002 Winter Olympics 500-Meter Speed-Skating Times in Seconds Check your work…

  20. Boxes of Girl Scout Cookies Sold by Troop 220 Using Stem-and-Leaf Plots • What was the least number of cookies sold? 40 boxes

  21. Using Stem-and-Leaf Plots Boxes of Girl Scout Cookies Sold by Troop 220 • What was the largest number of cookies sold? 94 boxes

  22. Using Stem-and-Leaf Plots Boxes of Girl Scout Cookies Sold by Troop 220 • Find the median of the data Find the middle leaf… 63 boxes

  23. Using Stem-and-Leaf Plots Boxes of Girl Scout Cookies Sold by Troop 220 • Find the mode of the data Look for the number that occurs most often in a row of leaves 63 boxes

  24. Stem-and-Leaf Plots The End

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