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Error / Uncertainty in Excel



 
 
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  #1  
Old March 2nd, 2009, 05:38 AM posted to microsoft.public.excel.charting
jel
external usenet poster
 
Posts: 15
Default Error / Uncertainty in Excel

I'm a physics student trying to use excel for my experimental data.
After inputting my values and their uncertainties (the error of the values),
I plot the values to find the slope and intercept but I can't find a way to
include their errors. It's possible to include error bars, but they're just
for show and don't actually do anything.

Is there a way for excel to calculate the error / uncertainty of a slope and
intercept?
  #2  
Old March 2nd, 2009, 07:35 AM posted to microsoft.public.excel.charting
Mike Middleton
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Posts: 653
Default Error / Uncertainty in Excel

Jel -

The array-entered LINEST worksheet function provides standard errors of the
regression coefficients.

Or, for formatted output, use the Regression tool of the Analysis ToolPak
(an add-in provided with Excel).

- Mike

http://www.MikeMiddleton.com



"Jel" wrote in message
...
I'm a physics student trying to use excel for my experimental data.
After inputting my values and their uncertainties (the error of the
values),
I plot the values to find the slope and intercept but I can't find a way
to
include their errors. It's possible to include error bars, but they're
just
for show and don't actually do anything.

Is there a way for excel to calculate the error / uncertainty of a slope
and
intercept?



  #3  
Old March 2nd, 2009, 01:02 PM posted to microsoft.public.excel.charting
Bernard Liengme[_2_]
external usenet poster
 
Posts: 1,027
Default Error / Uncertainty in Excel

Have a look here
http://people.stfx.ca/bliengme/ExcelTips.htm
where I have notes on confidence limits
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
remove caps from email

"Jel" wrote in message
...
I'm a physics student trying to use excel for my experimental data.
After inputting my values and their uncertainties (the error of the
values),
I plot the values to find the slope and intercept but I can't find a way
to
include their errors. It's possible to include error bars, but they're
just
for show and don't actually do anything.

Is there a way for excel to calculate the error / uncertainty of a slope
and
intercept?



 




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