I am using R3.02 on WIndows 7 64bit.
How can I test for trend across ordered groups. I am using
`prop.trend.test` but it doesn't order into groups and doesn't give
the expected output of `sum of ranks` , `z value`...
I have this data set and am doing
`prop.trend.test (birthweight2$lbw2 ,birthweight2$gestwkgp2 )`
Here is a sample data
lbw2 gestwkgp
normal birth weight 3
normal birth weight 3
normal birth weight 3
normal birth weight 4
normal birth weight 3
normal birth weight 3
normal birth weight 3
normal birth weight 4
low birth weight 2
normal birth weight 4
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