On Aug 24, 2011, at 3:31 PM, Jim Silverton wrote:
Hi all,
I have a vector xm say: xm = c(1,2,3,4,5,5,5,6,6)
I want to return a vector with the corresponding probabilities based
on the
amount of times the numbers occurred. For example, I should get the
following vector for xm:
prob.xm = c(1/9, 1/9, 1/9, 1/9, 3/9, 3/9, 3/9, 2/9, 2/9)
?prop.table
Usage (with table)
> prob.xm <- round( prop.table(table(xm)), digits=3)
> prob.xm
xm
1 2 3 4 5 6
0.111 0.111 0.111 0.111 0.333 0.222
--
David Winsemius, MD
West Hartford, CT
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