Page 184 - Math Course 3 (Book 2)
P. 184

Understanding Stem-and-Leaf Plots
         Mo. 12


           Lesson 2                                        stems
                                                           The greatest place value of the data is used for the
                                                           stems.

          KEY CONCEPTS:                                    leaves

          1. Display data in stem-and-leaf plots.          The next greatest place value forms the leaves.
          2. Interpret data in stem-and-leaf plots.

                                                             Stem Leaf               Stem Leaf
                                                                 4 2 4 2 8 6             4 2 2 4 6 9
         MO. 12 - L2a                                            5 2 0 5                 5 0 2 5


                     Display Data in                             6 1 0                   6 0 1
                 Stem-and-leaf Plots                          Numbers are split into ‘leaves’ (usually the last
                                                                    digit) and ‘stems’ (the other digit)

                     Vocabulary A-Z

                     Let us learn some vocabulary                        Let’s Begin



         stem-and-leaf plot
         In a stem-and-leaf plot, numerical data are listed in   Real World Example
         ascending or descending order.

                                                            Food
                    Beach Volleyball Scores                 Display the data in a stem-and-leaf plot.
               Country          Men      Women                      Peanuts Harvested, 2001

               Greece            52        47
                                                                 State              Amount(lb)
               United States     61        42
                                                                 Alabama                2400
               Brazil            42        42
                                                                 Florida                2800
               Canada            44        42
                                                                 Georgia                2800
               South Africa      60        17
                                                                 New Mexico             2400
               Cuba              50        54
                                                                 North Carolina         2900
               Germany           55        52
                                                                 Oklahoma               2200
               Autralia          42        42
                                                                 South Carolina         2900
               Switzerland       49        29
                                                                 Texas                  2600
               Norway            46        37
                                                                 Virginia               3000

                   42                     61               Step 1
           The least number has   The greatest number      Find the least and the greatest number. Then iden-
                                                           tify the greatest place value digit in each number.
            4 in the tens place.  has 6 in the tens place.  In this case, thousands.

           numbers are split into ‘leaves’ (usually the last         2200                  3000
                 digit) and ‘stems’ (the other digit)          The least number     The greatest number
                                                                  has 2 in the          has 3 in the
                                                                thousands place       thousands place



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