plot mean of vector v(1:i)

For simplicity, I have the following code

v=1:10;

for i=1:10
    mean_v(i) = mean(v(1:i));
end

plot(v,mean_v)

In essence, I want to plot the mean of the vector from elements 1 to i, as a function of the i-index. Any way I could do it in one line?

plot(v,mean(v(1:?)))

What should I change in the mean(v(1:?)) part?

Answer 1

[Stephen23]

plot(v,cumsum(v)./(1:numel(v)))