Home
Class 11
MATHS
Find the mean and variance for each of t...

Find the mean and variance for each of the data :

Text Solution

Verified by Experts

`{(x_i,fi,x_i fi,f_i(x_i-bar x)^2),(6,2,12,338),(10,4,40,324),(14,7,98,175),(18,12,216,12),(24,8,192,200),(28,4,112,324),(30,3,90,376),(,,sumf_i=40,sumf_i*x_i=760):}`
mean `= 760/(40) = 19`
varience = `(sum f_i(x_i-bar x)^2)/(40) = 1736/(40) = 43.4`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Find the mean and variance for the following data (i)Find n natural numbers. (ii)First 10 multiple of 3.

Find the mean and variance of the following data : 2,4,5,6,8,17

Calculate the mean and variance from the data given below:

Find the mean and variance for the following frequency distributions :

Find the mean and variance of the frequency distribution given below

Find the mean and variance for the following frequency distributions :

Find the S.D. and variance of the following data: