[R] Testing general hypotheses on regression coefficients

Bert Gunter gunter.berton at gene.com
Sat Sep 6 06:56:10 CEST 2014


1) 8th grade algebra tells me B2/B1 == 0 <==> B2 =0;

2) I suspect you would need to provide more context for the other, as
you may be going about this entirely incorrectly (have you consulted a
local statistician?):  your nonlinear hypothesis probably can be made
linear under the right parametrization, but context might suggest
something entirely different than the approach that motivated your

3) But forget all that! -- this is a list about the R language, not
statistics -- which seems to be the essence of your query --  although
I grant that the intersection is nonempty. But for statistics help,
you should try a statistics list like stats.stackexchange.com instead.


Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374

"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
Clifford Stoll

On Fri, Sep 5, 2014 at 7:17 PM, Chris <bonsxanco at yahoo.com> wrote:
> Hi.
> Say I have a model like
> y = a + B1*x1 + B2*x2 + B3*x3 + B4*x4 + e
> and I want to test
> H0: B2/B1 = 0
> or
> H0: B2/B1=B4/B3
> (whatever H1). How can I proceed?
> I now about car::linearHypothesis, but I can't figure out a way to do the
> tests above.
> Any hint?
> Thanks.
> C
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