MATLAB: Obtaining standard deviation in cftool

cftool

I have [x,y] as my data and I want to fit a linear line to it. My question is can I obtain standard deviation for the linear line that my data is fitted to?

Thanks

Best Answer

The thing labeled RMSE is the root mean squared error. It's an estimate of the standard deviation of the residuals or error term. Maybe that's what you want.

If you want a different notion of standard deviation, please explain further.

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MATLAB: Standard Deviation

numdev = floor((mean(S)-min(S))./std(S));

Determining the position of each standard deviation and plotting is left as a homework exercise.

Though possibly you want

numdev = floor((mean(S,2)-min(S,[],2))./std(S,[],2));

MATLAB: Weighted Standard deviation

The "var" function will accept weights, and you can take the square root of the result.

Best Answer

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