The following table gives the number of boys of a particular age in a class of 40 students. Calculate the mean age of the students.

Age (in years):	15	16	17	18	19	20
No. of students:	3	8	10	10	5	4.

 Given:

The number of boys of a particular age in a class of 40 students.

To do:

We have to calculate the mean age of the students.

Solution:

We know that,  

Mean$=\frac{\sum fx}{\sum f}$

Therefore,

Mean $=\frac{698}{40}$

$=17.45$ years

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Updated on: 10-Oct-2022

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