In statistics, pictograms are charts in which icons represent numbers to make it more interesting and easier to understand. A key is often included to indicate what each icon represents. All icons must be of the same size, but a fraction of an icon can be used to show the respective fraction of that amount.[6]
For example, the following table:
| Day | Letters sent |
|---|---|
| Monday | 10 |
| Tuesday | 17 |
| Wednesday | 29 |
| Thursday | 41 |
| Friday | 18 |
can be graphed as follows:
| Day | Letters sent |
|---|---|
| Monday |  |
| Tuesday |  |
| Wednesday | |
| Thursday | |
| Friday | |
Key: 
= 10 letters
= 10 letters
As the values are rounded to the nearest 5 letters, the second icon on Tuesday is the left half of the original.
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