calculating average without using the mean function

I am trying to calculating the average of a number set.

This is what i have done so far but it is not running smoothly

function [A] = average(X);
%this program calculates the average of a given number set
%enter the numbers either in a column or in a row; i.e use either a column
%vector or a row vector
[A] = Sum(X)/length(X)
%this will give the sum of the number set

Answer 1

[Image Analyst]

Try using sum() instead of Sum(). MATLAB is case sensitive.

[NNADOZIE OPARA]

thanks...

MATLAB is indeed case sensitive.

i have tried it and the program ran