How to find average?

Hi,

I'm a beginner to MATLAB. I'm simulating a coin toss and I'm trying to find the average across the 10 iterations.

for i = 1:10
  heads = 0;
  numflips = 0;
  payoffs = 0;
  sumpayoff = 0;
  while heads == 0
    numflips = numflips + 1;
    if rand () > .5
      payoff = 2^numflips;
      heads = 1;
      sumpayoff = sumpayoff + payoff;
    else
      heads = 0;
    end
  end
  payoff
  numflips
  avgpayoff = sumpayoff/numflips
end

Could somebody explain why this doesn't work? The "sumpayoff" bit isn't tallying up the payoffs across the 10 iterations accurately.

Answer 1

[Image Analyst]

Maybe say

avgpayoff(i) = sumpayoff/numflips % Get payoff for this iteration.

Then after the loop do

meanPayOff = mean(avgpayoff);