construct a stem and leaf plot for the typing speed data, where 4|5 means 45
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There are many graphers on line, such as
http://www.calculatorsoup.com/calculators/statistics/stemleaf.php
To construct a stem-and-leaf plot for typing speed data, follow these steps:
1. List the data in ascending order.
For example, let's assume the typing speed data is as follows: 54, 66, 72, 45, 58, 49, 62, 56, 53.
2. Separate each data point into a stem and a leaf.
The stem represents the tens digit, and the leaf represents the ones digit.
For example:
5 | 4
6 | 6 2 8
7 | 2
4 | 5 9 3
3. Write the stems in a column on the left side of the plot.
Start with the smallest stem value and end with the largest.
For this example, the stems are: 4, 5, 6, 7.
4. Write the leaves for each stem in the corresponding row.
Place the leaves in ascending order next to their respective stems.
For this example, the stem-and-leaf plot would look like:
4 | 5 9 3
5 | 4 6 8
6 | 2
7 | 2
In this stem-and-leaf plot, each row represents a different tens digit (stem), while the numbers within each row represent the ones digits (leaves). For example, in the first row, the stem 4 represents the numbers 45, 49, and 53.