module WilcoxonT: sig .. end
val one_sample : float array ->
?shift:float ->
?alternative:Tests.test_alternative ->
?correction:bool -> unit -> Tests.test_result
Wilcoxon signed-rank test, which evaluates the null hypothesis
that sample median is equal to the specified
shift.
Test assumptions:
- Sample under test was randomly selected from the population it
represents.
- All
vs -. shift differences are iid and come from a continious
population.
val two_sample_paired : float array ->
float array ->
?alternative:Tests.test_alternative ->
?correction:bool -> unit -> Tests.test_result
Wilcoxon paired signed-rank test, which evaluates the null hypothesis
that two
related samples have equal medians.
Test assumptions:
- Samples under test were randomly selected from the population
they represent.
- Observation differences
vs2 -. vs1 are iid and come from a
continious population.
References
- David J. Sheskin. "Handbook of Parametric and Nonparametric
Statistical Procedures", 3rd edition. CRC Press, 2003.
- http://www.fon.hum.uva.nl/Service/Statistics/Signed_Rank_Algorihms.html