The Use Of Some Parametric And Non parametric Methods For Analysis Of Factorial Experiments With Application

Abstract

summary

In this search, we examined the factorial experiments and the study of the significance of the main effects, the interaction of the factors and their simple effects by the F test (ANOVA) for analyze the data of the factorial experience. It is also known that the analysis of variance requires several assumptions to achieve them, Therefore, in case of violation of one of these conditions we conduct a transform to the data in order to match or achieve the conditions of analysis of variance, but it was noted that these transfers do not produce accurate results, so we resort to tests or non-parametric methods that work as a solution or alternative to the parametric tests , these methods (Rank Transformation (RT) and Aligned Rank Transformation (ART)) and applied to real data of the experiment obtained from the college of Veterinary Medicine University of Baghdad, where after testing data we found that it does not distribute normal distribution and It suffers from the problem of heterogeneity It was concluded that the application of the analysis of variance on these data did not give a significant effect for all the effects as well as for the transfers either in case of the application of non-parametric methods were given  high significant results .