This document describes how to create stemplots, which are a visual way to represent data values. It involves ordering the data from least to greatest, using all but the last digit of each number as "stems" on the left side of a T-chart, and placing the removed last digits as "leaves" on the right side to show the distribution of values. It provides examples of creating stemplots and discusses techniques like rounding stems or using split stems when data is not well-distributed along a single stem.

1. Stemplots

2. Given a set of data 12, 45, 56, 22, 17, 55, 23, 23, 18, 47, 48, 46, 29

3. 1. List data in order from least to greatest 12, 17, 18, 22, 23, 23, 29, 45, 46, 47, 48, 55, 56

4. 2. Cut off last digit, digits remaining become our stem. These will go in order on the left side of a T 1 2 3 4 5

5. 3. The cut off digits become our leaves and go in order on the right side of the T 1 2 7 8 2 2 3 3 9 3 4 5 6 7 8 5 5 6

6. 4. Finally include a key to let the reader know what the values mean Key 3 | 5 = 35

7. Occasionally you may need to round off. 23, 97, 111, 121, 138, 201, 297, 345 If we were to only cut off 1 digit, our stems would go from 2 to 34. So we will round off to the nearest tens place 20, 100, 110, 120, 140, 200, 300, 350 And now cut off two digits. There will be a 0 in front of the 20. Now our stems will go from 0 to 3 and aren’t as spread out. 0 2 1 0 1 2 4 2 0 3 0 5 Key 1|4 = 140

8. We may also use split stems. 40, 41, 41, 42, 43, 48, 49, 49, 50, 51, 52, 52, 53, 56, 57 If we cut off the last digit, we will only have 2 stems. So what we will do is have to rows for each stem. The first row will contain the leaves from 0-4 and the second row will contain the leaves from 5-9 4 0 1 1 2 3 4 8 9 9 5 0 1 2 2 3 5 6 7 Key 4 | 7 = 47