1. Stem and Leaf Plots (tens) (ones) Stem and Leaf Plots emphasize place value. The stems represent the tens digit and the leaves represent the ones 22, 24, 25, 28 30, 31, 33 46, 47 53, 55, 55 Data points are: If you count the leaves, you will know how many data points there are. There are 12 leaves, so you have 12 data points.

2. Stem and Leaf Plots (tens) (ones) Put the following values into a stem and leaf plot. 5, 8, 10, 15, 17, 31, 31, 32 5 8 0 5 7 0 1 1 2 1 2 3

3. Minimum, Maximum, Range Minimum = _______Maximum = _______Range = _______ 225533 (tens) (ones) minimum point maximum point (55 – 22) Combine the tens and ones 20 + 2 = 22 Combine the tens and ones 50 + 5 = 55

4. Median Median = _______ 32 (tens) (ones) Cross out the smallest and highest leaves together until you find the middle value. If there are 2 middle values, take the average of the 2. 31 + 33 = 64 64 ÷ 2 = 32

5. Median Median = _______ 32 (tens) (ones) If crossing out the leaves confuses you, list the data points out first and then cross them off 22, 24, 25, 28, 30, 31, 33, 46, 47, 53, 55, 55 31 + 33 = 64 64 ÷ 2 = 32

6. Mode Mode = _______ (tens) (ones) The mode is the value(s) that occurs most often. 4 7 Remember: This represents 47 47 Don’t get confused. The mode is not 7 or 77!

7. Stem and Leaf Plots Sometimes the stem is the ones place and the leaf is the tenths place 2.2, 2.4, 2.5, 2.8 3, 3.1, 3.3 4.6, 4.7 5.3, 5.5, 5.5 Data points are: