calculate mean in a for loop

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Rogers Tuyisenge
Rogers Tuyisenge 2020-8-1
评论： Rogers Tuyisenge 2020-8-1
i wish to calculate mean for every additional column (eg.for first row; calculate mean for column 1 store in (1,1), for column 2 calculate mean for first 2 columns store in (1,2), for column 3 calculate mean for first 3 columns store in (1,3) and so on) for each of my rows independently.
I have a 600x200 matrix (data) and I have tried using nested for loops so that the calculation is done for all 600 rows but my results are incorrect. grateful for any ideas. a part of my code looks like this;
m=600
n=200
for k=1:m
for h=1:n
Mean_answer(k,h)= mean(data(1:h))
end
end

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采纳的回答

Image Analyst
Image Analyst 2020-8-1
You need to specify the kth row of data
Mean_answer(k, h)= mean(data(k, 1:h))

更多回答（1 个）

Matt J
Matt J 2020-8-1
编辑：Matt J 2020-8-1
No need for loops,
Mean_answer=cumsum(data,2)./(1:size(data,2));
  1 个评论
Rogers Tuyisenge
Rogers Tuyisenge 2020-8-1
Thanks Matt, working on other stats too so just wanted all of them in a loop

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