00:01
Here it is given that a survey is conducted among 18 years old children and less than that.
00:06
Okay, and the number of families considered is 200.
00:09
So, n equal to 200.
00:11
So the details are given in the table.
00:14
The number of children in a family, we have taken as 0, 1, 2, 3, 4, 5.
00:25
Okay, and the corresponding number of families we have considered here as 0 children with family.
00:31
With zero children is 96 with one children is 35 with two children 36 with three children 22 with four children nine and with five children two okay and this total is 200 now we have to find the mean and standard deviation okay so for that we have to find f x and f x wire so f x is here zero so this is x and this is here so now multiply these two column in so here we will get 35, 72, 66, 10.
01:08
And the total of this is 219...