Question

find the mean number of children per family from the given data below that is number of children = 0, 1, 2, 3, 4, 5 respectively number of families equal to 4,8, 23,10 ,4,1 respectively​

Answer 1

mean = sum of all the observation!/ total number of observation

0+1+2+3+4+5/6

15/6 = 2.5

Answer 2

The mean number of children per family is 2.1

Step-by-step explanation:

see the given below attachment

given :

number of childrens = 0,1,2,3,4,5

number of families = 4,8,23,10,4,1

we have to find the mean

mean = $\frac{\sum fixi}{\sum fi}$

or

mean = $\frac{sum of all observations }{total number of observations}$

on putting the values

we get,

$\sum fixi = 105$

$\sum fi = 50$

mean = $\frac{\sum fixi}{\sum fi}$

mean = $\frac{105}{50}$

mean = 2.1

hence ,

The mean number of children per family is 2.1

#Learn more:

Find the quadratic polynomial in each case, with the given numbers as the sum and

product of its zeroes respectively.

-1/4,1/4​

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