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The weekly wages (in Rs) of 30 workers in a factory are.
830, 835, 890, 810, 835, 836, 869, 845, 898, 890, 820, 860, 832, 833, 855, 845, 804, 808, 812, 840, 885, 835, 835, 836, 878, 840, 868, 890, 806, 840
Using tally marks make a frequency table with intervals as 800–810, 810–820 and so on.
Frequency distribution table using the tally marks for the given data is:
Interval | Tally marks | Frequency |
800-810 | III | 3 |
810-820 | II | 2 |
820-830 | I | 1 |
830-840 |
| 9 |
840-850 |
| 5 |
850-860 | I | 1 |
860-870 | III | 3 |
870-880 | I | 1 |
880-890 | I | 1 |