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
ur

1 thought on “Find the Mode from the following data:Marks Number of<br /><br />Below 10 Below 20 Below 30 Below 40 Below 50 3 8 17 20 22<br />ur”

1. Answer:

   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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