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The weekly wages (in `) 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.

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The representation of data by frequency distribution table using tally marks is as follows:

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