On 10/17/2010 11:25 AM, Jan private wrote:
> So here is the next version.
>
> Why does the intercept needs lower.tail=TRUE to give the same result as
> summary() for value=0?
It doesn't.
Or rather: For all coefficients, lower/upper tail depends on the _sign_
of t, so presumably you have a negati
So here is the next version.
Why does the intercept needs lower.tail=TRUE to give the same result as
summary() for value=0?
# See Verzani, simpleR (pdf), p. 80
coeff.test <- function(lm.result, idx, value) {
# idx = 1 is the intercept, idx>1 the other coefficients
# null hypothesis: coeff = v
On 10/17/2010 05:41 AM, Jan private wrote:
> Also, as a non-professional, I would like to know whether the function
> is valid for all coefficients of lm(), e.g. coeff.test(lm(N ~ D + H), H,
> "H", 70). I am aware that Verzani gives a different formula for testing
> the intercept.
In a word, no,
> coeffname <- deparse(substitute(var))
>
> Is that what you wanted?
>
Yes! That gets rid of the extra parameter.
Thanks
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-p
[mailto:r-help-boun...@r-
> project.org] On Behalf Of Jan private
> Sent: Saturday, October 16, 2010 9:41 PM
> To: r-help
> Subject: [R] Variable name as string
>
> Hello,
>
> from Verzani, simpleR (pdf), p. 80, I created the following function to
> test the coefficien
Hello,
from Verzani, simpleR (pdf), p. 80, I created the following function to
test the coefficient of lm() against an arbitrary value.
coeff.test <- function(lm.result, var, coeffname, value) {
# null hypothesis: coeff = value
# alternative hypothesis: coeff != value
es <- resid(lm.result)
6 matches
Mail list logo
