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Question
The electricity bills of 45 houses in a particular locality are given below. Tabulate the given data and present it as a cumulative frequency table with one of the classes being 300 - 450:
784, 567, 890, 231, 150, 458, 356, 762, 386, 824, 525, 663, 724, 841, 315, 641, 156, 715, 156, 317, 814, 547, 879, 456, 463, 664, 175, 584, 515, 487, 871, 511, 522, 454, 247, 819, 412, 326, 445, 311, 321, 545, 344, 266, 351.
Sum
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Solution
| Class | Tally Marks | Frequency | Cum Frequency |
| 150 - 300 | IIII II | 7 | 7 |
| 300 - 450 | IIII IIII I | 11 | 18 |
| 450 - 600 | IIII IIII III | 13 | 31 |
| 600 - 750 | IIII II | 7 | 38 |
| 750 - 900 | IIII II | 7 | 45 |
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