The marks obtained by 110 students in an examination are given below:

Marks:	30-35	35-40	40-45	45-50	50-55	55-60	60-65
Frequency:	14	16	28	23	18	8	3

Find the mean marks of the students.

Given:

The marks obtained by 110 students in an examination.

To do:

We have to find the mean marks of the students.

Solution:

We know that,

Mean $=\frac{\sum{f_ix_i}}{\sum{f_i}}$    

Therefore,  

Mean $=\frac{4930}{110}$

$=\frac{493}{11}$

$=44.81$

The mean marks of the students 44.81 marks.  

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Updated on: 10-Oct-2022

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