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atrom
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Posts: 0
Joined: January 6th, 2003, 10:38 am

standard deviation

August 27th, 2004, 11:09 am

does anyone know how to calculate the standard deviation in a bivariate system. i have a scatter plot. and i have plotted a regression. how do i calculate the stdev and can it be done in excel for such a systemThanks
 
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SPAAGG
Posts: 3
Joined: March 21st, 2003, 1:31 pm

standard deviation

August 27th, 2004, 12:17 pm

I would not say that's stdev... That's correlation between the two variates.
 
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Aaron
Posts: 4
Joined: July 23rd, 2001, 3:46 pm

standard deviation

August 30th, 2004, 12:26 am

In a bivariate system there are two variables, hence two standard deviations. You can compute either one in a spreadsheet. The regression will introduce a new standard deviation, the standard deviation of the residuals.