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Stem and Leaf

Stem and Leaf. A stem-and-leaf plot can help you compare data. Stem and Leaf. A stem-and-leaf plot is a table that represents a group of numbers. (data) The leaves represents numbers in the ones place. The stems represents numbers in the tens and hundreds places.

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Stem and Leaf

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  1. Stem and Leaf A stem-and-leaf plot can help you compare data.

  2. Stem and Leaf • A stem-and-leaf plot is a table that represents a group of numbers. (data) • The leaves represents numbers in the ones place. • The stems represents numbers in the tens and hundreds places. • In a stem and leaf plot, you don’t skip numbers in the stems. • If there is no leaf for a stem, then you leave it blank.

  3. Drawing a Stem and Leaf Plot Draw an ordered stem-and-leaf plot for the following data for the price of tennis shoes. Make sure the graph is properly labeled.

  4. Drawing a Stem and Leaf Plot PRICES OF TENNIS SHOES: 82, 69, 25, 55, 75, 88, 99, 64, 82, 125, 70

  5. Drawing a Stem and Leaf Plot PRICES OF TENNIS SHOES: 82, 69, 25, 55, 75, 88, 99, 64, 82, 125, 70 Our first step is to write the numbers in order from least to greatest.

  6. Drawing a Stem and Leaf Plot PRICES OF TENNIS SHOES: 25, 55, 64, 69, 70, 75, 82, 82, 88, 99, 125 Our next step is to draw a table with two columns -- one for stems and one for leaves

  7. Drawing a Stem and Leaf Plot PRICES OF TENNIS SHOES: 25, 55, 64, 69, 70, 75, 82, 82, 88, 99, 125 Our next step is to fill in the table. Remember the stem represents the numbers in the tens and hundreds places and the leaves represent the numbers in the ones place

  8. PRICES OF TENNIS SHOES: This is the correct way to draw the stem and leaf plot for our data.

  9. Let’s try another one…

  10. 56 61 61 60 59 57 58 58 63 61 59 The heights of 11 fourth-grade badminton players are (in inches):

  11. 56 57 58 58 59 59 60 61 61 61 63 First, order your data from least to greatest.

  12. Then, put your data in a stem-and-leaf plot.

  13. The ordered numbers are: 56, 57, 58, 58, 59, 59, 60, 61, 61, 61, 63 • Each STEM stands for the first digit of each number. • Record the tens digits in order from least to greatest.

  14. The ordered numbers are: 56, 57, 58, 58, 59, 59, 60, 61, 61, 61, 63 • Each LEAF stands for the second digit of each number. • Record the ones digits in order from least to greatest.

  15. You can use a stem-and-leaf plot to find the median and the mode.

  16. MEDIAN Find the middle number in a set of numbers. The median is 59 inches. MODE Find the number that occurs most often in a set of numbers. The mode is 61 inches.

  17. Now, let’s try one on our own!

  18. Here are the scores of our volleyball games in a stem-and-leaf plot!

  19. Volleyball Scores for Our Team

  20. How many volleyball games were played? 9

  21. What are the scores? 5, 6, 7, 9, 13, 15, 15, 15, 16

  22. What is the median? 13

  23. What is the mode? 15

  24. Congratulations, you are on the way to being a stem-and-leaf expert!!

  25. 56 61 61 60 59 57 58 58 63 61 59 The heights of 11 fourth-grade badminton players are (in inches):

  26. ASSIGNMENT • Complete problems on page 306-307 # 1-17

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