[R] Rsquared for anova

From: Dorien Herremans <dorien.herremans_at_ua.ac.be>
Date: Mon, 18 Apr 2011 14:37:12 +0200

Thanks Dieter,

Even if I use lm(), I get the following output:

> summary(fit)

             Df  Sum Sq Mean Sq F value    Pr(>F)
nh1            1   324.0  323.99  139.13 < 2.2e-16 ***
nh2            1   723.1  723.12  310.53 < 2.2e-16 ***
nh3            1  1794.2 1794.21  770.49 < 2.2e-16 ***
Residuals   4604 10721.2    2.33
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’


no R squared to be found.

The lm() output gives this:


> summary(fit)
             Df  Sum Sq Mean Sq F value    Pr(>F) nh1            1   324.0  323.99  139.13 < 2.2e-16 *** nh2            1   723.1  723.12  310.53 < 2.2e-16 *** nh3            1  1794.2 1794.21  770.49 < 2.2e-16 *** Residuals   4604 10721.2    2.33 --- Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ I just want to see how wel the model fits... Another strange thing. I did the same calculations in SPSS and got different results, among others, higher p values. lm() and aov() just do linear regressions (anova) right? I tried with the same factorial variables (without interaction effects to test). Thanks! On 15 April 2011 18:07, Dieter Menne <dieter.menne_at_menne-biomed.de> wrote:
>
> dorien wrote:
>>
>> I calculate an anova test in the following way:
>>
>> ... aov example
>>
>> I want to check the fit of the model with Rsquared
>>
>
> Try summary(lm(...)) instead.
>
> Dieter
>
>
>
> --
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-- Dorien Herremans Department of Environment, Technology and Technology Management Faculty of Applied Economics University of Antwerp B.513 Prinsstraat 13 2000 Antwerp Belgium +32 3 265 41 25 -- Dorien Herremans Department of Environment, Technology and Technology Management Faculty of Applied Economics University of Antwerp B.513 Prinsstraat 13 2000 Antwerp Belgium +32 3 265 41 25 ______________________________________________ R-help_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Received on Mon 18 Apr 2011 - 12:39:42 GMT

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