On Feb 5, 2010, at 11:54 AM, Trafim Vanishek wrote:
Dear all,
I would like to ask how to extract the p-value for the whole model
from
summary(lm).
This didn't help a lot summary.lm
I disagree. The help page tells you that "coefficients" has the p-
values sogo ahead and get them:
> summary.lm(lm(speed~dist, cars))$coefficients
Estimate Std. Error t value Pr(>|t|)
(Intercept) 8.2839056 0.87438449 9.473985 1.440974e-12
dist 0.1655676 0.01749448 9.463990 1.489836e-12
That is a table or matrix (it doesn't really matter for our purposes)
and can be address by either numbers or names. Here is how to do it
with names.
> summary.lm(lm(speed~dist, cars))$coefficients["dist","Pr(>|t|)"]
[1] 1.489836e-12
summary(lm(speed~dist, cars))
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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