The following distribution gives the daily income of 50 workers in a factory. Convert the distribution above to a less than type cumulative frequency distribution and draw its ogive.
Daily income in Rupees 100-120 120-140 140-160 160-180 180-200
Number of workers 12 14 8 6 10

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Detailed Solution

Converting the given distribution table to a less than type cumulative frequency distribution, and we get

Daily Income	Frequency	Cumulative Frequency
Less than 120	12	12
Less than 140	14	26
Less than 160	8	34
Less than 180	6	40
Less than 200	10	50

From the table plot the points corresponding to the ordered pairs such as (120, 12), (140, 26), (160, 34), (180, 40) and (200, 50) on graph paper and the plotted points are joined to get a smooth curve and the obtained curve is known as less than type ogive curve

Ncert solutions class 10 chapter 14-9