(Part 10, Biostatistics and Computer Application, AGB)
Non Parametric Tests
Description:
We use non-parametric tests when we do not expect our data to
conform to a parametric distribution such as the normal distribution or
the t distribution. They can also be used if other assumptions about the
data needed for certain tests are violated. Eg. Equality of standard
deviations for the two-sample t test.
The Sign Test is the simplest nonparametric test for matched or paired
data. The approach is to analyze only the signs of the difference scores
Wilcoxon Signed Rank Test is a popular nonparametric test for matched or paired data. Like the
Sign Test, it is based on difference scores, but in addition to analyzing
the signs of the differences, it also takes into account the magnitude of
the observed differences.
Note: The following pdf is the AGB note of (Unit 1) Biostatistics and Computer Application, Part 10 of BVSc & AH. *AGB - Animal Genetics and Breeding.
Topics of the PDF file of 'Non Parametric Tests' :
Introduction / Non Parametric Test Procedures / Hypothesis Test Hierarchy / Advantage and Disadvantage of Non Parametric Test / Difference between Parametric and Non Parametric Test / Sign test / Wilcoxon Signed Rank Test.
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You will find almost all the Veterinary Notes fully free in PDF format from "BVSc & AH Notes" corner of E-Learning in this website. Previous AGB notes of Biostatistics are Classification, Tabulation and Presentation of Data, Measures of Central Tendency, Measures of Dispersion, Probability, Moments, Skewness and Kurtosis, Correlation and Regression, Sampling Methods, Tests of Significance, CRD and RBD etc. Hope the note will benefited you. Share with your Vet Friends and Family. For any query knock us. Stay tuned. Thank You. Happy Learning!
