1.

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,construct a frequency table with equal class interval as 610-630.690. 636, 710, 656. 642, 672, 694, 654, 706, 718

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