When using ANCOVA, how to obtain the adjusted standard deviation?

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Jos Feys

See the link below, in which the adjusted standard deviation is calculated upon the standard error:

https://www.youtube.com/watch?v=1uHqQW7JK-k

Yun Liu

Thank you for your answer! Jos Feys

David Eugene Booth

An easier way is to do the ANCOVA as a regression problem. Then you will have most of what you want directly in the output. See Montgomery Design and analysis of experiments that ANCOVA material near the end of the book. Best wishes David Booth