Add FriedmanTest and NemenyiTest#359
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Closes JuliaStats#312 (supersedes it — adds Nemenyi post-hoc and Iman-Davenport F) ## What's added - `FriedmanTest`: Friedman rank sum test with both χ²_F (original) and Iman-Davenport F statistic (recommended by Demšar 2006) - `NemenyiTest`: all-pairs post-hoc test with tabulated q_α values (StudentizedRange(k,∞)/√2, matching Demšar 2006 Table 5) - `issignificant(nt, i, j)`: convenience binary decision helper - Full docstrings with math, references, and external links - Test suite cross-validated against SciPy ## References - Demšar (2006). Statistical Comparisons of Classifiers over Multiple Data Sets. JMLR 7:1–30. - Iman & Davenport (1980). Approximations of the critical region of the Friedman statistic. - Nemenyi (1963). Distribution-free multiple comparisons. PhD thesis.
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #359 +/- ##
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+ Coverage 94.55% 94.81% +0.26%
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+ Hits 1736 1830 +94
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devmotion
reviewed
Jun 10, 2026
devmotion
reviewed
Jun 10, 2026
| Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7" | ||
| Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c" | ||
| Roots = "f2b01f46-fcfa-551c-844a-d8ac1e96c665" | ||
| StableRNGs = "860ef19b-820b-49d6-a774-d7a799459cd3" |
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Its used in test/anderson_darling.jl, f.jl, and 2 more.
Co-authored-by: David Müller-Widmann <devmotion@users.noreply.github.com>
Co-authored-by: David Müller-Widmann <devmotion@users.noreply.github.com>
Co-authored-by: David Müller-Widmann <devmotion@users.noreply.github.com>
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Closes #312 (supersedes it — adds Nemenyi post-hoc and Iman-Davenport F)
What's added
FriedmanTest: Friedman rank sum test with both χ²_F (original) and Iman-Davenport F statistic (recommended by Demšar 2006)NemenyiTest: all-pairs post-hoc test with tabulated q_α values (StudentizedRange(k,∞)/√2, matching Demšar 2006 Table 5)-issignificant(nt, i, j): convenience binary decision helperReferences