The following table shows the weights of 12 workers in a factory:

Weight (in kg) No. of workers

60 4

63 3

66 2

69 2

72 1

Find the mean weight of the workers.

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Uploaded: 2022-01-05T06:16:12+00:00
Description: R S Aggarwal Solutions - Mathematics - Class 9 Mean Median And Mode Of Ungrouped Data Mean Median And Mode Of Ungrouped Data Exercise 18B solutions written by Lido's expert teachers

Question

The following table shows the weights of 12 workers in a factory Find the mean weight of the workers

Accepted Answer

We know that Mean weight of the workers fi xi fi By substituting the values Mean weight of the workers 77112 64250kg Therefore the mean weight of the workers is 64250kg

Weight (in kg) (xi)	No. of workers (fi)	fi xi
60	4	240
63	3	189
66	2	132
69	2	138
72	1	72
	Σ fi = 12	Σ fi xi =771

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