NPC TEST 2.0: Statistical Software for Multivariate Permutation Tests

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PERMUTATION APPROACH FOR HYPOTHESIS TESTING

The multivariate permutation approach for hypothesis testing by NonParametric Combination (NPC) offers the following advantages:

§ No need to specify the dependence structure among variables

§ Exact solutions

§ Powerful tests

§ Treatment of missing values (missing completely at random, MCAR, or not completely at random, not-MAR)

§   It also deals with

ü   Stratification

ü Multivariate categorical variables

§   It handles

ü     Mixed variables

ü  Multivariate restricted alternatives

NPC TEST is a unique and innovative statistical software tool that provides researchers with authentic and powerful innovative solutions in the field of hypotheses testing.

 

FEATURES OF STATISTICAL SOFTWARE NPC TEST 2.0

NPC TEST allows us to perform hypothesis testing in the case of

§        Two and C samples with dependent or independent variables

§        Two and C samples with repeated measures

§        Stratified analysis

NPC TEST also provides:

§        Powerful test statistics for the treatment of missing values

§        One or two tailed test

Data types handled:

§        categorical

§        ordered categorical

§        numeric or continuous

§        binary

An innovation unique to NPC TEST allows the performance of any combination of tests, starting with an appropriate set of elementary tests, in a multivariate or multistrata overall global test through the NPC methodology.

Elementary partial test statistics include:

§   t Statistic

§   ANOVA

§   difference of means

§   test statistics -  missing values

§   Anderson Darling

§   Cramer-Von-Mises

§   Chi-square

§   Modified
Chi-square

§   Likelihood Ratio

Combining functions for intermediate tests include:

§        Fisher

§        Liptak

§        Tippet

§        Direct

NPC TEST supports all statistical software standard functions: data import, data manipulating and produces an effective report that can be easily integrated and customized by means of an efficient text editor.