I believe the binom.test procedure is producing one tailed p values
rather than the two tailed value implied by the alternative hypothesis
language. A textbook and SAS both show 2*9.94e-07 = 1.988e-06 as the
two tailed value. As does the R summation syntax from R below. It
looks to me like the
Michael Grant wrote:
I believe the binom.test procedure is producing one tailed p values
rather than the two tailed value implied by the alternative hypothesis
language. A textbook and SAS both show 2*9.94e-07 = 1.988e-06 as the
two tailed value. As does the R summation syntax from R below.
The computation 2*sum(dbinom(c(10:25),25,0.061)) does not correspond
to any reasonable definition of p-value. For a symmetric
distribution, it is fine to use 2 times the tail area of one tail.
For an asymetric distribution, this is silly.
The standard definition given in elementary texts is
On Thu, 5 Feb 2009, Albyn Jones wrote:
The computation 2*sum(dbinom(c(10:25),25,0.061)) does not correspond
to any reasonable definition of p-value. For a symmetric
distribution, it is fine to use 2 times the tail area of one tail.
For an asymetric distribution, this is silly.
Silly is much
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