kruskal wallis

  1. N

    t test or ANOVA, ? normal distribution

    I have an experiment on cancer cell lines. There are 7 cell lines. Each cell line is treated with a different concentration of the same drug. The average concentration that killed half the cells in each cell line is calculated, along with a standard deviation as follows: Cell Line //////...
  2. D

    Multiple comparison test, with ambiguous labels/ranks

    In a clinical study, I have patient's health condition labeled as grade 1, 2, or 3. Some patients are labeled as "Either 1 or 2" by the doctor, meaning the doctor considers both grade 1 and 2 as valid descriptions of the patient's health condition. When performing say a Kruskal-Wallis test...
  3. S

    Kruskal Wallis test and problem with zeros

    Hi. I am conducting a biological research about species abundance variations between different hours and localitions. I am comparing 11 different locations and 5 different hours. Independent variables are hour and locality. Dependent variables are abundances of each species found in...
  4. P

    grouping likert items

    First my apologies if this has already been covered, I have searched but been unable to find anything on this specific point. the objective of my research is to investigate any difference in the Weltanschauungen of actors in the resource consent process and the effect this has on their...