https://github.com/cmcntsh/stats2021_nonparametric

https://github.com/cmcntsh/stats2021_nonparametric

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https://github.com/cmcntsh/stats2021_nonparametric/blob/main/

# Nonparametric tests

This is part of a set of pages on statistics. https://github.com/cmcntsh/stats2021_topics

Selecting statistical tests depends a lot on the levels of measurement of the variables of interest and the distributional assumptions of the tests. Before we look at much else we'll look at tests which have fewer distributional assumptions than other statistical tests. These tests are called nonparametric tests. Robust methods are increasingly used instead of nonparametric tests, but you'll still see nonparametric tests used because they're simpler to implement than some robust methods.

## Exercises

* Nonparametric tests exercise: https://github.com/cmcntsh/stats2021_exer_nonparametric

## Readings

* Field chapter 7
* Field chapter 19 sections only 19.2, 19.3, 19.5, 19.6, 19.8
* Navarro chapter 10, chapter 11 only section 11.9 available at: https://drive.google.com/file/d/1awJBpfse5BpesVMRijnggTRSTygNWGl0/view
* Statkat in Jamovi: https://blog.jamovi.org/2018/06/25/statkat.html
* Statkat statistical method selection table: https://statkat.com/stattest_overview.php

## Statistical Concept Videos

* Introduction to nonparametric tests (7 min): https://www.youtube.com/watch?v=xA0QcbNxENs
* Introduction to chi-square test (38 min): https://www.youtube.com/watch?v=SvKv375sacA&list=PLIeGtxpvyG-J1zwbVOInWdlKBG3AVmXxJ&index=2&t=0s
* Chi-square tests (12 min) (optional): https://www.youtube.com/watch?v=7_cs1YlZoug&t=594s
* Mann-Whitney U test (7 min): https://www.youtube.com/watch?v=VIzvWiaTN2I
* Wilcoxon signed ranks test (20 min): https://www.youtube.com/watch?v=v4ZHlTbTOK8&list=PLqzoL9-eJTNAB5st3mtP_bmXafGSH1Dtz&index=35&t=0s
* McNemar's test (9 min): https://www.youtube.com/watch?v=HomY3fts5pQ
* Kruskal-Wallis H test (9 min): https://www.youtube.com/watch?v=BMITawOrxwg

## Statistical Software Videos

* Chi-square goodness of fit (7 min): https://www.youtube.com/watch?v=FfabgyEKwtk&list=PLkk92zzyru5OAtc_ItUubaSSq6S_TGfRn&index=47
* Chi-square test of association (6 min): https://www.youtube.com/watch?v=vsrj647Tb3g
* McNemar test (5 min): https://www.youtube.com/watch?v=W_y6EiF8mPA&list=PLkk92zzyru5OAtc_ItUubaSSq6S_TGfRn&index=49
* Kruskal-Wallis test (6 min): https://www.youtube.com/watch?v=qfs6T311_88&list=PLkk92zzyru5OAtc_ItUubaSSq6S_TGfRn&index=35

## Statistics in the Literature

* Chi-square test of association (Fisher's exact test): https://www.sciencedirect.com/science/article/pii/S0960076020302764

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