[R] (no subject)

[Keniajin Wambui]

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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