[R] Extract statistics from lm()

[David Winsemius]

http://finzi.psych.upenn.edu/R/Rhelp08/archive/147713.html

On Feb 28, 2009, at 2:21 PM, Bogaso wrote:

>
> Hi, perhaps this question was answered previously however I could  
> not find
> them. My problem is how how to extract a particular statistic from the
> result given by lm(). For e.g.
>
> ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
> trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
> group <- gl(2,10,20, labels=c("Ctl","Trt"))
> weight <- c(ctl, trt)
>> summary(lm.D9 <- lm(weight ~ group))
>
> Call:
> lm(formula = weight ~ group)
>
> Residuals:
>    Min      1Q  Median      3Q     Max
> -1.0710 -0.4938  0.0685  0.2462  1.3690
>
> Coefficients:
>            Estimate Std. Error t value Pr(>|t|)
> (Intercept)   5.0320     0.2202  22.850 9.55e-15 ***
> groupTrt     -0.3710     0.3114  -1.191    0.249
> ---
> Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
>
> Residual standard error: 0.6964 on 18 degrees of freedom
> Multiple R-squared: 0.07308,    Adjusted R-squared: 0.02158
> F-statistic: 1.419 on 1 and 18 DF,  p-value: 0.249
>
>
> Here I want to extract the values of "t-stat", "Pr(>|t|)"  
> individually. Can
> anyone please guide me how to get them?
> -- 
> View this message in context: http://www.nabble.com/Extract-statistics-from-lm%28%29-tp22265770p22265770.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.