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

Question 2 Mean Median And Mode Of Ungrouped Data Exercise 18A

The number of children in 10 families of a locality are 2, 4, 3, 4, 2, 0, 3, 5, 1 and 6. Find the mean number of children per family.

It is given that number of children in 10 families of a locality are 2, 4, 3, 4, 2, 0, 3, 5, 1 and 6.

We know that

Mean = sum of numbers/ total numbers

By substituting the values

Mean = (2 + 4 + 3 + 4 + 2 + 0 + 3 + 5 + 1 + 6)/ 10

On further calculation

Mean = 30/10

By division

Mean = 3

Therefore, the mean number of children per family is 3.

Video transcript
"hello students welcome to leader homework my name is anant anand sharma the question here is number of children's in ten families of a locality are two four three four two zero three five one and six find the mean of number of children's per family so we need to find mean of children's so it is given that the number of children in 10 families children are given 2 four three four two zero three five one and six we know that what is the mean formula mean formula is sum of numbers divided by total number so some add all these divided by 10 since it is given for 10 number of families on further calculation you will get 30 upon 10 which is 3. so the mean that means average number of children per family is 3 that's all for this if you have any queries feel free to comment below and subscribe to the channel for all future updates thank you"
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