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Drawing less than type ogive and …

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Drawing less than type ogive and greater than ogive of given data along same axes, on the graph paper, let us find the median from the graph Class - 100-120 120-140 140-160 160-180 180-200 Frequency - 12 14 8 6 10
  • 1 answers

Gaurav Seth 5 years, 1 month ago

 

Frequency distribution table of less than type is as follows:            

Daily income     

(in Rs)            

(upper class limits)

Cumulative frequency

Less than 120

12

Less than 140

12 + 14 = 26

Less than 160

26 + 8 = 34

Less than 180

34 + 6 = 40

Less than 200

40 + 10 = 50

 

Now taking upper class limits of class intervals on x-axis and their respective frequencies on y-axis, we can draw its ogive as follows:

Here, N = 50

N/2 = 25

Now, mark the point on curve whose y-coordinate is 25, its corresponding x-coordinate is 138.5. So median of this data is 138.5 (approximately). 

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