Find the mean of the following data- - Class Intervals 0 - 10 11- 20 21 - 30 31 - 40 41 - 50 51 - 60- Frequency 4 7 9 10 7 3- -

x_i=5,15,25,35,45,55∑ f_i=4+7+9+10+7+3=40∑ x_if_i=20+105+225+350+315+165=1180x̅=118040=29.5 ' ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Arithmetic Mean and Range

Find the mean...

Question

Find the mean of the following data.
$\begin{matrix} Class Intervals & 0 - 10 & 11 - 20 & 21 - 30 & 31 - 40 & 41 - 50 & 51 - 60 Frequency & 4 & 7 & 9 & 10 & 7 & 3 \end{matrix}$

Open in App

Solution

Suggest Corrections

marks	11-20	21-30	31-40	41-50	51-60	61-70	71-80
number of students	2	6	10	12	9	7	4

Area in hectare	11 - 20	21 - 30	31 - 40	41 - 50	51 - 60	61 - 70	71 - 80
No. of farmers	58	103	208	392	112	34	12

Class	1- 10	11-20	21-30	31-40	41-50
$f_{i}$	5	7	8	6	4

Marks	1 - 10	11 - 20	21 - 30	31 - 40	41 - 50	51 - 60	61 - 70	71 - 80
Frequency	3	8	12	14	10	6	5	2

Weight (in mg)	11 - 20	21 - 30	31 - 40	41 - 50	51 - 60
No. of seeds	18	22	30	16	4