# 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

Question 5 Mean Median And Mode Of Ungrouped Data Exercise 18C

The weights (in kg) of 8 children are

13.4, 10.6, 12.7, 17.2, 14.3, 15, 16.5, 9.8.

Find the median weight.

By arranging the numbers in ascending order

We get

9.8, 1.6, 12.7, 13.4, 14.3, 15, 16.5, 17.2

We know that n = 8 which is even

So we get

Median = ½ {(n/2)th term + (n/2 + 1)th term}

It can be written as

Median = ½ {4th term + 5th term)

By substituting the values

Median = ½ (13.4 + 14.3)

On further calculation

Median = ½ (27.7)

We get

Median = 13.85kg

Therefore, the median weight is 13.85kg.

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