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.The weekly wages (In rupees) of'28 workers of a factory are given below 668, 610, 642, 658. 668, 620, 702,704. 678, 615, 640, 680, 719, 716, 720, 705, 700, 615, 690. 636, 710, 656, 642, 672, 694, 654, 706. 718construct a frequency table with equal class interval as 610-630.

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