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Prepare a Frequency Table and Find the Mean of Members of 40 Families. - SSC (English Medium) Class 8 - Mathematics

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Question

The number of members in the 40 families in Bhilar are as follows:
1, 6, 5, 4, 3, 2, 7, 2, 3, 4, 5, 6, 4, 6, 2, 3, 2, 1, 4, 5, 6, 7, 3, 4, 5, 2, 4, 3, 2, 3, 5, 5, 4, 6, 2, 3, 5, 6, 4, 2. Prepare a frequency table and find the mean of members of 40 families.

Solution

Number of members (`x_i`) Number of families (`f_i`) `f_ix_i`
1 2 2
2 8 16
3 7 21
4 8 32
5 7 35
6 6 36
7 2 14
  N = 40 = 156
 


Since, mean =

                    = `156/40`

                    = 3.9

So, the mean of members of 40 families is 3.9.

  Is there an error in this question or solution?

APPEARS IN

 Balbharati Solution for Balbharati Class 8 Mathematics (2019 to Current)
Chapter 11: Statistics
Practice Set 11.1 | Q: 3 | Page no. 70
Solution Prepare a Frequency Table and Find the Mean of Members of 40 Families. Concept: Concept of Arithmetic Mean.
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