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Nonparametric Test for the Umbrella Alternative in a Randomized Complete Block and Balanced Incomplete Block Mixed Design

Nonparametric tests have served as robust alternatives to traditional statistical tests with rigid underlying assumptions. If a researcher expects the treatment effects to follow an umbrella alternative, then the test developed in this research will be applicable in the Balanced Incomplete Block Design (Hemmer’s test). It is hypothesized that Hemmer’s test will prove to be more powerful than the Durbin test when the umbrella alternative is true. A mixed design consisting of a Balanced Incomplete Block Design and a Randomized Complete Block Design will also be considered, where two additional test statistics are developed for the umbrella alternative. Monte Carlo simulation studies were conducted using SAS to estimate powers. Various underlying distributions were used with 3, 4, and 5 treatments, and a variety of peaks and mean parameter values. For the mixed design, different ratios of complete to incomplete blocks were considered. Recommendations are given.

Identiferoai:union.ndltd.org:ndsu.edu/oai:library.ndsu.edu:10365/26696
Date January 2012
CreatorsHemmer, Michael Toshiro
PublisherNorth Dakota State University
Source SetsNorth Dakota State University
Detected LanguageEnglish
Typetext/thesis
Formatapplication/pdf
RightsNDSU Policy 190.6.2, https://www.ndsu.edu/fileadmin/policy/190.pdf

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