How i solve the problem of question of class 10th ncert of exercise 14.1 of statistics chapter of class 10th, sir give me the best way to solve this problem in easy and simple way The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.
Find the midpoint of the given interval using the formula.
Midpoint (xi) = (upper limit + lower limit)/2
In this case, the value of mid-point (xi) is very large, so let us assume the mean value, A = 70 and class interval is h = 10.
So, ui = (xi-A)/h = ui = (xi-70)/10
So, Mean = x̄ = A+(∑fiui /∑fi)×h
= 70+(-2/35)×10
= 69.42
Therefore, the mean literacy part = 69.42