pairwiseOrdinalIndependence: Pairwise tests of independence for tables with one ordered...

In rcompanion: Functions to Support Extension Education Program Evaluation

Pairwise tests of independence for tables with one ordered nominal variable

Description

Conducts pairwise tests for a 2-dimensional table, in which one variable is ordered nominal and one variable is non-ordered nominal. The function relies on the coin package.

Usage

pairwiseOrdinalIndependence(
  x,
  compare = "row",
  scores = NULL,
  method = "fdr",
  digits = 3,
  ...
)

Arguments

x	A two-way contingency table. One dimension is ordered and one is non-ordered nominal.
compare	If "row", treats the rows as the grouping variable. If "column", treats the columns as the grouping variable.
scores	Optional vector to specify the spacing of the ordered variable.
method	The method to adjust multiple p-values. See stats::p.adjust.
digits	The number of significant digits in the output.
...	Additional arguments, passed to stats::chisq_test.

Value

A data frame of comparisons, p-values, and adjusted p-values.

Author(s)

Salvatore Mangiafico, [e-mail]

References

https://rcompanion.org/handbook/H_09.html

See Also

pairwiseNominalIndependence

Examples

### Independence test for table with one ordered variable
data(Breakfast)
require(coin)
chisq_test(Breakfast,
           scores = list("Breakfast" = c(-2, -1, 0, 1, 2)))
PT = pairwiseOrdinalIndependence(Breakfast, compare = "row")
PT
cldList(comparison = PT$Comparison, 
        p.value    = PT$p.value, 
        threshold  = 0.05)
        
### Similar to Kruskal-Wallis test for Likert data
data(PoohPiglet)
XT = xtabs(~ Speaker + Likert, data = PoohPiglet)
XT
require(coin)
chisq_test(XT,
           scores = list("Likert" = c(1, 2, 3, 4, 5)))
PT=pairwiseOrdinalIndependence(XT, compare = "row")
PT
cldList(comparison = PT$Comparison, 
        p.value    = PT$p.value, 
        threshold  = 0.05)         
                                                              

rcompanion documentation built on May 29, 2024, 8:42 a.m.