MATLAB: Average distance from the origin

Question

matrix=load('Data');
x = matrix(:,1);
y = matrix(:,2);
distances = sqrt((x-0).^2 + (y-0).^2)
sum(distances)./(size(matrix))

Hey, so I just wanted to make sure I'm doing this correctly. What I'm trying to do is find the average distance between points in a matrix and the origin. I got an answer I'm not quite sure about being correct, so I wanted to be safe.

Answer 1

You seem to be doing it correctly, but if you can use the built-in functions, I would use hypot and mean:

distances = hypot(x,y);
avg_dist = mean(distances);