On 2011-04-01 10:19, Jim Silverton wrote:
I have a matrix with 2 columns and I want to do fishers exact test for these
with the totals for each row being 100 say.
The data has the form:
23 12
32 21
12 2
and these represents the tables:
23 12
77 88
32 21
78 79
12 2
88 98
How do I use apply to speed up aclculation of the fisher.exact test?
apply(yourMatrix, 1, function(x) fisher.test(cbind(x, 100 - x)))
or, if you only want the P-value:
apply(yourMatrix, 1,
function(x) fisher.test(cbind(x, 100 - x))$p.value)
Peter Ehlers
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