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//Caption: Weighted Arithmetic mean of ungrouped data
//Example3.4
//page43
clear;
clc;
X = input('Enter the demand in units =');
w = input('Corresponding Weights=');
n = length(X);
num =0;
den =0;
for i = 1:n
num = num+w(i)*X(i);
den = den+w(i);
end
Xw = num/den;
disp(Xw,'The Estimated demand for the Year 2003 is Xw=');
//Result
//Enter the demand in units = [400,500,450]
//Corresponding Weights= [1,2,3]
//The Estimated demand for the Year 2003 is Xw= 458.33333
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