Find the mean of the following frequency distribution ...

Name: Lido Learning Solutions
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

Find the mean of the following frequency distribution

Accepted Answer

We know that Mean fi xi fi By substituting the values Mean 275050 55

Variables (xi)	Frequency (fi)
10	7
30	8
50	10
70	15
89	10

Variables (xi)	Frequency (fi)	fi xi
10	7	70
30	8	240
50	10	500
70	15	1050
89	10	890
	Σ fi = 50	Σ fi xi = 2750

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