chisq: Extract Chi-squared statistic

In mosaic: Project MOSAIC Statistics and Mathematics Teaching Utilities

Extract Chi-squared statistic

Description

Extract Chi-squared statistic

Usage

chisq(x, ...)

## S3 method for class 'htest'
chisq(x, ...)

## S3 method for class 'table'
chisq(x, correct = FALSE, ...)

## Default S3 method:
chisq(x, correct = FALSE, ...)

Arguments

x	An object of class "htest" a coming from a Chi-squared test, an object of class "table", or the inputs to tally().
...	additional arguments passed on to tally or chisq.test.
correct	a logical indicating whether a continuity correction should be applied.

See Also

after_stat()

Examples

if(require(mosaicData)) {
  Mites.table <- tally( ~ outcome + treatment, data=Mites )
  Mites.table 
  chisq.test(Mites.table)
  chisq(Mites.table)
  chisq(chisq.test(Mites.table))
  ## Randomization test.  Increase replications to decrease Monte Carlo error.
  do(3) * chisq( tally( ~ outcome + shuffle(treatment),  data=Mites ) )
  Mites.rand <- do(1000) * chisq( tally( ~ outcome + shuffle(treatment),  data=Mites ) )
  tally( ~(X.squared >= chisq(Mites.table)), data=Mites.rand, format="proportion")
}
  

mosaic documentation built on May 29, 2024, 5:27 a.m.