A robust method for the analysis of experiments with ordered treatment levels. |
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Authors: | J W McKean J D Naranjo B E Huitema |
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Institution: | Department of Statistics, Western Michigan University, Kalamazoo 49008, USA. |
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Abstract: | A robust approach for the analysis of experiments with ordered treatment levels is presented as an alternative to existing approaches such as the parametric Abelson-Tukey test for monotone alternatives and the nonparametric Terpstra-Jonckheere test. The method integrates the familiar Spearman rank-order correlation with bootstrap routines to provide magnitude of association measures, p values, and confidence intervals for magnitude of association measures. The advantages of this method relative to five alternative approaches are pointed out. |
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