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R2 vaue by calibration curve
Posted: Mon Mar 28, 2011 7:43 pm
by praveenpaliwal
Hellow every body,
I want to know How can we calculate R2 value for a calibration curve without software
Means manual calculation to calculate R2 value
Best regards
Praveen
Re: R2 vaue by calibration curve
Posted: Mon Mar 28, 2011 7:48 pm
by DR
Re: R2 vaue by calibration curve
Posted: Tue Mar 29, 2011 1:57 am
by Don_Hilton
A couple of books that are quite handy ( and inexpensive)
Statistics Manual by Crow, Davis, and Maxfield
The Statistical Analysis of Experimental Data by John Mandel
These are replublished by Dover Books
These books date back to days when computers were those big expensive things that ran with punched cards and it was often much easier to grab a pencil, paper, and slide rule (or calculator for those who could afford them).
But basic statistics is basic statistics...
Re: R2 vaue by calibration curve
Posted: Tue Mar 29, 2011 11:55 am
by lmh
Re: R2 vaue by calibration curve
Posted: Tue Mar 29, 2011 12:09 pm
by Peter Apps
Do you have Excel (or anything similar)?
Peter
Re: R2 vaue by calibration curve
Posted: Tue Mar 29, 2011 7:05 pm
by JGK
Statistics for Analytical Chemistry (Miller and Miller) has worked longnand versions of regression calculations.
Alternatley my $20 casio fx-991MS calculator does regressions and the manual lists all the formulas.