Find the Mode from the following data:Marks Number of
Below 10 Below 20 Below 30 Below 40 Below 50 3 8 17 20 22
urgent please
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In the question cumulative frequency is given that is why it is converted into frequency
class. fi
0-10. 3
10-20. 8-3=5
20-30. 17-8= 9
30-40. 20-17= 3
40-50. 22-20= 2
Now here modal class is 9
therefore l = 20 , F1=9 , f0 = 5, F2 = 3 , h 10
By formula
Mode = l + (f1-f0/ 2f1 - f0 - F2)× h
= 20 + (9-5/18-5-3)×10
= 20 + 40/10
= 20 + 4
= 24
Therefore the mode is 24 of the given question
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