Q. 105.0( 1 Vote )

The marks obtained by 80 students in a test are given below:


Find the modal marks.

Answer :

We can draw the table as below,



We have;


N = 80 (even number)


Median =





Now,


∑fx = 1992 and ∑f = N = 80


Mean =


Hence,


Mode = 3(median) – 2 (mean)


= 3×28 - 2×24.9


= 84 –49.8


= 34.2


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