Recall the example, in which a teacher recorded the responses on the first question of a multiple choice quiz, with five possible responses (A, B, C, D, and E). The raw data was as follows:
| A | A | C | A | B | B | A | E | A | C | A | A | A | C |
| E | A | B | A | A | C | A | B | E | E | A | A | C | C |
We computed a frequency distribution that looked like this:
| Response to First Question | Frequency |
| A | 14 |
| B | 4 |
| C | 6 |
| D | 0 |
| E | 4 |
Now, let's compute the proportions for each category.
OpenStax Contemporary Mathematics, 8.2 Visualizing Data, exercise 1