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How do you draw a cumulative frequency graph? (Part 1)
Given this set of data...
For cumulative frequency graphs, remember to plot your points at the TOP of each class boundary, DO NOT use midpoints.
See Part 2 of this card for the actual graph
| Time, t | Frequency | Cumulative Frequency |
| 0< t ≤10 | 22 | 22 |
| 10< t ≤15 | 32 | 54 |
| 15< t ≤20 | 26 | 80 |
| 20< t ≤25 | 15 | 95 |
| 25< t ≤30 | 5 | 100 |
For cumulative frequency graphs, remember to plot your points at the TOP of each class boundary, DO NOT use midpoints.
See Part 2 of this card for the actual graph
