Journal of Biometrics & Biostatistics

Alfred Ndungu

Publications

• Research Article
  Nonparametric Tests for Ordering in Completely Randomized and Randomized Block Mixed Designs
  Author(s): Rhonda Magel and Alfred NdunguRhonda Magel and Alfred Ndungu
  
  Two nonparametric tests are proposed in testing for k nondecreasing treatment effects under a mixed design consisting of a completely randomized portion and a randomized block portion. The randomized block portion may contain missing observations for some of the treatments within a block. A simulation study is conducted to estimate the powers of the two tests for 3, 4, and 5 treatments under a variety of different treatment effects and underlying distributions. Powers are estimated when the randomized block portion is 1/4, 1/3, 1/2, 1.0, 1.5, 2.0, 3.0 and 4.0 times the completely randomized portion. A recommendation as to which test has higher powers is given... Read More»
  DOI: 10.4172/2155-6180.1000170

  Abstract PDF