jonckheere.test in R - alternative hypothesis? -


i'm using jonckheere.test clinfun package evaluate whether there trend across groups in data. more specifically, have ~60 samples can grouped 1 of 5 categories.

i see 1 parameter call alternative default being 'two.sided'. initial interpretation of h0 = no trend, or down, h1 = trend, either or down. in reading documentation see this:

alternative    means monotonic (two.sided), increasing, or decreasing

from looks two.sided version, h0 = trend h1 = no trend.

am reading right , having trouble thinking in reverse?

you reading correctly. if specify "two.sided" alternative means monotonic in direction. mean means increasing or decreasing - either 1 works.


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