Sturges' formula to calculate magnitude of classes I=\[\frac{L-S}{1+3.222log_{10}(N)}\]
I= Class interval
L=largest value
S= smallest value
N= No of observations
Problem:- In a group of 50 workers, highest wage is Rs. 250 and lowest wage is 100 per day. Find the size of the interval?
solution
Highest value L=250
Lowest value S= 100
No of observations N=50
I=\[\frac{250-100}{1+3.222log_{10}(50)}\]
=22.576
