interaction {amba} | R Documentation |
Currently limited to two categorical variables. These have not yet been fully developed or tested.
interaction (t1, t2) is.interaction (t) interaction.predesign (x) interaction.combine (x, op) term.resist (t, tx) term.resists (t, tx)
t1 |
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t2 |
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x |
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t |
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tx |
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op |