Sent: Wed, May 19, 2010 3:31:26 PM
Subject: Re: [R] p-values 2.2e-16 not reported
Dear all,
thanks for your feedback so far. With the help of a colleague I
think I found the solution to my problem:
pt(10,100,lower=FALSE)
[1] 4.950844e-17
IS *NOT* EQUAL TO
1-pt(10,100,lower=TRUE)
[1] 0
On 2010-05-20 08:52, Shi, Tao wrote:
Will,
I'm wondering if you have any
insights after looking at the cor.test source code. It seems to be fine to me, as the p
value is either calculated by your first method or a
.C code.
...Tao
Dear Tao,
I think the described problem of p-values
Dear all,
how can I get the exact p-value of a statistical test like cor.test() if
the p-value is below the default machine epsilon value of
.Machine$double.eps = 2.220446e-16?
At the moment smaller p-values are reported as p-value 2.2e-16.
.Machine$double.eps - 1E-100 does not solve this
On Wed, May 19, 2010 at 10:53 AM, Will Eagle will.ea...@gmx.net wrote:
Dear all,
how can I get the exact p-value of a statistical test like cor.test() if the
p-value is below the default machine epsilon value of .Machine$double.eps =
2.220446e-16?
At the moment smaller p-values are
AM
To: r-help@r-project.org
Subject: [R] p-values 2.2e-16 not reported
Dear all,
how can I get the exact p-value of a statistical test like cor.test() if
the p-value is below the default machine epsilon value of
.Machine$double.eps = 2.220446e-16?
At the moment smaller p-values are reported
Dear all,
thanks for your feedback so far. With the help of a colleague I think I
found the solution to my problem:
pt(10,100,lower=FALSE)
[1] 4.950844e-17
IS *NOT* EQUAL TO
1-pt(10,100,lower=TRUE)
[1] 0
This means that R is capable of providing p-values 2.2e-16, however,
if the value
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