Q5 of 69 Page 6

Find the mode of the following distribution:

Here, the maximum number of students i.e. 71 have got marks in the interval 60 – 70.


So, the modal class is 60 – 70.


Now, modal class = 60 – 70, lower limit (l) of modal class = 60, class size(h) = 10


frequency (f1) of the modal class = 71


frequency (f0) of class preceding the modal class = 31


frequency (f2) of class succeeding the modal class = 52


Now, let us substitute these values in the formula





= 60 + 6.78


= 66.78


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