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Question
The following table shows classification of number of workers and number of hours they work in software company. Prepare less than upper limit type cumulative frequency distribution table:
| Number of hours daily | Number of workers |
| 8 - 10 | 150 |
| 10 - 12 | 500 |
| 12 - 14 | 300 |
| 14 - 16 | 50 |
Solution
| Number of hours daily | Number of workers | Cumulative Frequency |
| 8 - 10 | 150 | 150 |
| 10 - 12 | 500 | 150 + 500 = 650 |
| 12 - 14 | 300 | 650 + 300 = 950 |
| 14 - 16 | 50 | 950 + 50 = 1000 |
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