Statistical

Selection

Chart

For 2 samplesASK

You say you want to compare!How many samples?

Are my samples related? ORAre they independent?

For Class A DataUSE

For related samplesASK

What is the level of measurement?

For Class B DataUSE

For Class C DataUSE

T-Test forCorrelated Sample

WilcoxenMatched-Pairs

Signed-Ranks Test

McNemar Test forSignificance of

Changes

For Class A DataUSE

For independent samples ASK

What is the level of measurement?

For Class B DataUSE

For Class C DataUSE

T-Test forSeparate Group orPooled Variance

Mann-WhitneyU-Test

Chi-Square Test

For k > 2 samples

ASK

You say you want to compare!How many samples?

Within which measurementlevel does my data fall?

For Class A DataUSE

Analysis of Variance(ANOVA)

For RelatedSamples USE

For Class B DataASK

Are my samples related or independent?

For IndependentSamples USE

Friedman Two-WayAnalysis ofVariance

Kruskal-Wallis One-Way Analysis of

Variance

For Class C DataASK

Are my samples related or independent?

For RelatedSamples USE

For IndependentSamples USE

Cochran Q-Test Chi-Square Test

For RelatedSamples USE

For IndependentSamples USE

For 2 variables

ASK

You say you want relate!How many variables?

What is the levelof measurement?

For Class A DataUSE

Pearson Product-MomentCoefficient of Correlation (r)

For Class B DataUSE

Spearman Rank-Order Coefficientof Correlation (rho) OR

Kendall Rank Correlation (Tau)

For Class C DataUSE

Contingency Coefficient(C)

For Mixed DataUSE

Biserial CorrelationSpearman rho or

Kendall Tau

If one is Class A andone is Class C USE

If mixed Class A and B, convert

Class A to B -USE

For K variables

ASK

You say you want relate!How many variables?

What is the levelof measurement?

For Class A DataUSE

Multiple RegressionAnalysis

For Class B DataUSE

Kendall PartialRank-Correlation

For Class C DataUSE

Discriminate Analysis

You say you want describe!Just One Question...

What is the levelof measurement?

For Class A DataUSE

Mean and Variance or Standard Deviation

For Class B DataUSE

Median and Range

For Class C DataUSE

Mode