The marks of 15 students in an examination are

25, 19, 17, 24, 23, 29, 31, 4, 19, 20, 22, 26, 17, 25, 21.

Find the median score.

Question

The marks of 15 students in an examination are 25 19 17 24 23 29 31 4 19 20 22 26 17 25 21 Find the median score

Accepted Answer

By arranging the numbers in ascending order

We get

17, 17, 19, 19, 20, 21, 22, 23, 24, 25, 26, 29, 31, 35, 40

We know that n = 15 which is odd

So we get

Median = ½ (n + 1) th term

By substituting the values

Median = ½ (15 + 1) th term

It can be written as

Median = value of the 8th term = 23

Therefore, the median score is 23.

RS Aggarwal Solutions Class 9 Mathematics Solutions for Mean Median And Mode Of Ungrouped Data Exercise 18C in Chapter 18 - Mean Median And Mode Of Ungrouped Data