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 error on linear fit

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T O P I C    R E V I E W
chico_garcia Posted - 10/06/2006 : 4:03:30 PM
I need to know how does the origin calculate the standard error of the slope when you perform a linear fit?????

Origin Version (Select Help-->About Origin): 7.5
Operating System:WXP
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larry_lan Posted - 10/07/2006 : 9:44:14 PM
Hi:

To know the standard error of the given linear model:

we will firstly calculate the residual sum of square (RSS):

And get the sample variance:

Then the standard error of regression coefficients can be obtained by:

and

where n is the number of samples and SXX is:


Larry
OriginLab Technical Services

Edited by - larry_lan on 10/07/2006 9:45:47 PM

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