How to calculate the standard deviations of each row of an array and get those as a 1-D array?

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Md. Golam Mostafa 2015-6-24

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回答： jaypal singh 2019-1-27

采纳的回答： Azzi Abdelmalek

How to calculate the standard deviations of each row of an array and get those as a 1-D array?

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Azzi Abdelmalek 2015-6-24

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编辑：Azzi Abdelmalek 2015-6-24

在 MATLAB Online 中打开

M=rand(4,3)
% std for each row
s1=std(M,[],2)
% std for each column
s2=std(M)

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Stephen23 2015-6-24

编辑：Stephen23 2015-6-24

Any internet search engine will locate these functions for you:

http://www.mathworks.com/help/matlab/ref/mean.html

http://www.mathworks.com/help/matlab/ref/median.html

Learn to use the documentation, it is not just there to make the internet more colorful. The documentation explains how functions work, and it has examples too!

Azzi Abdelmalek 2015-6-24

在 MATLAB Online 中打开

mean(M,2),
median(M,2)

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Jan 2015-6-24

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Such questions are solved exhaustively in the documentation of Matlab: see doc std.

If you do not know the required command, you can look in the "See also" line of similar commands or use docsearch to search for terms inside the documentation. Even asking your favorite internet search engine is a good idea. All of these ideas are faster and more efficient than asking the forum, so it is recommended to try them at first.

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jaypal singh 2019-1-27

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dear sir,

I have 90000x13 (table).mat file .

here is 1-80000 is 0 label

and 800001-90000 is 1 label

i have to find avg and std for 0 label seperate and for 1 label seperate

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