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Problem: ogive {{10-20,20-30,30-40,40-50,50-60},{15,25,20,12,8}} [ Calculator, Method and examples ]

Solution:
Your problem -> ogive {{10-20,20-30,30-40,40-50,50-60},{15,25,20,12,8}}

To draw Less than type cumulative frequency curve, we first prepare the following table

 Class Frequencyf < Upper cf 0 - 10 - 10 0 10 - 20 15 20 15 20 - 30 25 30 40 30 - 40 20 40 60 40 - 50 12 50 72 50 - 60 8 60 80

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