Write a function average that takes an input vector .x and returns as output the

Question

Write a function average that takes an input vector .x and returns as output the average (mean) value of its elements, according to the formula average(x) = 1/N summation ^N _ I = 1 xi where N is the number of elements in x. Test your function by comparing its output to the output of the built-in Matlab function mean on a random vector of length 100 whose elements are uniformly distributed between 0 and 1. Write a function deviation that takes an input vectors and returns the standard deviation of its elements, according to the formula deviation (or) = .square root 1/N summation ^N _i= (x_i - X)^2 where x is the average the elements of .r, and N is the number of elements in x. Test your function by comparing its output to the output of the built-in Matlab function std on a random vector of length 100 whose elements are in a normal (Gaussian) distribution about x = 0.

Explanation / Answer

AVERAGE:

sum=0;
num=0;
ValuesEntered=[];
while(1)
    n=input('Enter number >=0, enter ends input and finds average ->');
    if (n>=0)
        sum=sum+n;
        num=num+1;
    ValuesEntered=[ValuesEntered n]
    else
        Average=sum/num
        break
    end
end

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