Useful Links
Statistics
Non-parametric Methods
1. Introduction to Non-parametric Statistics
2. Fundamental Concepts and Tools
3. One-Sample Tests
4. Two-Sample Tests
5. Multiple Sample Tests
6. Measures of Association
7. Non-parametric Regression and Smoothing
8. Advanced Resampling Methods
9. Survival Analysis Methods
10. Multivariate Non-parametric Methods
11. Practical Implementation
12. Advanced Topics and Extensions
Two-Sample Tests
Independent Samples
Wilcoxon Rank-Sum Test
Test Setup and Assumptions
Ranking Procedure
Test Statistic Construction
Exact Distribution
Normal Approximation
Confidence Interval for Location Difference
Handling Tied Observations
Mann-Whitney U Test
Relationship to Wilcoxon Test
U Statistic Construction
Equivalence of Test Statistics
Kolmogorov-Smirnov Two-Sample Test
Test Setup and Assumptions
Test Statistic Construction
Critical Values
p-value Calculation
One-sided vs. Two-sided Tests
Median Test
Test Setup Using Contingency Table
Test Statistic Construction
Chi-square Approximation
Limitations and Alternatives
Wald-Wolfowitz Runs Test
Test for Identical Distributions
Test Statistic Construction
Dependent Samples
Sign Test for Paired Data
Test Setup and Assumptions
Test Statistic Construction
Exact p-value Calculation
Normal Approximation
Wilcoxon Signed-Rank Test for Pairs
Application to Paired Differences
Test Statistic Construction
Confidence Interval Construction
McNemar's Test
Test for Paired Proportions
Test Setup Using 2×2 Table
Test Statistic Construction
Continuity Correction
Exact Test for Small Samples
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3. One-Sample Tests
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5. Multiple Sample Tests