# 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, 840Using tally marks make a frequency table with intervals as 800–810, 810–820 and so on.

For frequency distribution table, we need to count the wages lying in a particular class interval. For example for class interval 800 - 810. Count the number of wages lying between this range using tally marks, and for 800 - 810, 3 wages lie under it.
Tally marks are a quick way of keeping track of numbers in groups of five. One vertical line is made for each of the first four numbers; the fifth number is represented by a diagonal line across the previous four.
Frequency distribution table using the tally marks for the given data is:

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