Question

find the mean of children per family from the data given below
no.of candidates 0-1,1-2,2-3,3-4,4-5,5-6
no.of family 5,11,25,12,5,2​

Answer 1

Given : children per family

no.of children 0-1,1-2,2-3,3-4,4-5,5-6

no.of family 5,11,25,12,5,2​

To Find : Mean

Solution:

CI Mean f mean*f

0- 1 0.5 5 2.5

1- 2 1.5 11 16.5

2- 3 2.5 25 62.5

3- 4 3.5 12 42

4- 5 4.5 5 22.5

5- 6 5.5 2 11

total 60 157

Mean = 157/60

= 2.617

mean of children per family = 2.617

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Answer 2

Step-by-step explanation:

Given Find the mean of children per family from the data given below no of candidates 0-1,1-2,2-3,3-4,4-5,5-6

no of family 5,11,25,12,5,2  

• Number of children(x1)   x1      Number of families(f1)            f1x1
•       0 – 1                           0.5                   5                                   2.5                      
•       1 – 2                           1.5                    11                                  16.5
•       2 – 3                           2.5                  25                                 62.5
•        3 – 4                          3.5                  12                                  42
•        4 – 5                          4.5                   5                                   22.5
•        5 – 6                           5.5                  2                                   11
• Now the mean is calculated as
•       So x bar = ∑ f1x1 / n
•                      = 2.5 + 16.5 + 62.5 + 42 + 22.5 + 11 / 60
•                      = 157 / 60
•                      = 2.616

Therefore mean of children per family is 2.6

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https://brainly.in/question/8576832