1. To accompany Hawkes lesson 2.2b (vi) Original content by D.R.S.
Stem and Leaf Plots
To accompany
Hawkes lesson 2.2b (vi)
Original content by D.R.S.

2. What is a Stem and Leaf Plot?
Each data value is viewed as:
A stem – the leading digit(s)
A leaf – the trailing digit(s)
Each stem is written once
Next to the stem, all the leaves associated with that stem

3. Quick Little Example – Exam Scores
Observations about data:
Lowest is 42
Highest is 100
Design decision:
So let’s take the hundreds and tens positions as the stem
And the ones digit as the leaf. 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

4. Set up the stems
STEM
LEAF 4 5 6 7 8 9 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

5. Fill in the leaves
STEM
LEAF 4 5 6 7 8 9 2 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

6. Fill in the leaves
STEM
LEAF 4 5 6 8 7
7 1 9
2 7 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

7. Fill in the leaves
STEM
LEAF 4 5 6 8 7
7 1 9
2 7 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

8. Fill in the leaves
STEM
LEAF 4 5 6 8 7
7 1 9 9
2 7 5 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

9. Fill in the leaves
STEM
LEAF 4 2 5 6
8 5 7
7 1 9 8 9
2 7 5 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

10. Fill in the leaves
STEM
LEAF 4 2 5 6
8 5 7
7 1 9 8 9
2 7 5 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

11. The completed Stem and Leaf Plot4 2 5 6
8 5 7
7 1 9 8 9
2 7 5 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100

12. An Ordered Stem and Leaf Plot4 2 5 6
5 8 7
1 7 9 8 9
2 5 7 10 85 92 77 71 68 97 88 82 80 79 95 87 65 42
100