Research


Number	Number	Type	Type	Measure	Test(s)
of	of	of	of
Dependent*	Independent**	Dependent	Independent
Variables	Variables	Variable(s)	Variable(s)
1	0	continuous normal	not applicable	mean	one-sample t-test
	(1 population)	continuous non-normal	(none)	median	one-sample median
		categorical		proportions	Chi Square goodness-of-fit, binomial test
	1	normal	2 categories	mean	2 independent sample t-test
	(2 independent populations)	non-normal		medians	Mann Whitney,
		non-normal		medians	Wilcoxon rank sum test
		categorical		proportions	Chi square test
		categorical		proportions	Fisher's Exact test
	0	normal	not applicable/	means	paired t-test
	(1 population measured twice)		categorical
	or
	1	non-normal		medians	Wilcoxon signed ranks test
	(2 matched populations)	categorical		proportions	McNemar, Chi-square test
	1	normal	categorical	means	one-way ANOVA
	(3 or more populations)	non-normal		medians	Kruskal Wallis
		categorical		proportions	Chi square test
	2 or more	normal	categorical	means	Factorial ANOVA
	(e.g., 2-way ANOVA)	non-normal		medians	Friedman test
		categorical		proportions	log-linear, logistic regression
	0	normal	not applicable	means	Repeated measures ANOVA
	(1 population measured
	3 or more times)
	1	normal	continuous		correlation
		normal			simple linear regression
		non-normal			non-parametric correlation
		categorical	categorical or continuous		logistic regression
		categorical	continuous		discriminant analysis
	2 or more	normal	continuous		multiple linear regression
		non-normal
		categorical			logistic regression
		normal	mixed categorical and continuous		Analysis of Covariance
		normal			General Linear Models (regression)
		non-normal
		categorical			logistic regression
2	2 or more	normal	categorical		MANOVA
2 or more	2 or more	normal	continuous		multivariate multiple linear regression
2 sets of	0	normal	not applicable		canonical correlation
2 or more	0	normal	not applicable		canonical correlation
2 or more	0	normal	not applicable		factor analysis