MATLAB: Problem 106. Weighted average

Question

function y = weighted_average(x,w)

f=x.*y;

f=sum(f);

y=f/length(x);

end

is there any error. i submit and get WA(wrong answer).

Answer 1

Instead of

f=x.*y

shouldn't it be

 f=x.*w

I can't see how you get any output at all, whether correct or incorrect. You should be getting an error message.