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help for nonadd
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Tukey's test for nonadditivity
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 nonadd depvar term [term...] 
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Description
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nonadd performs Tukey's test for nonadditivity.
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Examples
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 . nonadd y a s
 . nonadd y a b c
 . nonadd y a s|a b a*b
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Author
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      Philip B. Ender
      UCLA Department of Education
      UCLA Academic Technolog services
      enderatucla.edu 
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Also see
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On-line:  help for anova
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