Small Numbers in Chi-square and G–tests

See the Handbook for information on these topics.

Yates’ and William’s corrections in R

The following table lists the continuity corrections available for the Chi-square tests and G-tests discussed in this book.

Test	Function	Package	Correction	Option	Default	Notes
Chi-square	chisq.test	stats	Yates	correct=TRUE	TRUE	2 x 2 table only
G	G.test	RVAide Memoire	(none)
G	GTest	DescTools	Yates Williams	correct= "yates" correct= "williams"	"none"

Pooling

Recommendation

See the Handbook for information on these topics.

©2015 by Salvatore S. Mangiafico.
Rutgers Cooperative Extension, New Brunswick, NJ.

Except for organization of statistical tests and selection of examples for these tests ©2014 by John H. McDonald. Used with permission.

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Mangiafico, S.S. 2015. An R Companion for the Handbook of Biological Statistics, version 1.3.0.
rcompanion.org/rcompanion/. (Pdf version: rcompanion.org/documents/RCompanionBioStatistics.pdf.)