On Testing a Trend in Means in Oneway Layout

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A test for a trend in means in oneway layout is discussed with particular emphasis on sample size determination. The proposed method amounts to formulating a linear contrast among sample means and testing it for significance. The resulting test statistic is reduced to a test by Barlow et al. (1972) When sample sizes are equal and to the Armitage‐Kendall correlation test for a trend in proportions when the response variable is dichotomous. The problem of sample size determination is discussed and illustrated with numerical examples.

Original languageEnglish (US)
Pages (from-to)173-180
Number of pages8
JournalBiometrical Journal
Issue number2
StatePublished - 1987


  • Contrast
  • Oneway layout
  • Trend in means

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