# One And Two-Sample Test Selection

Click the buttons below to select the appropriate test. Be sure and check the assumptions of the test you wish to use.

### What kind of test do you want?

Tests for Means, Variability, Proportions, Rates, or Correlations Nonparametrics## Means

### Do you have a One or Two-Sample test?

One Two## Means, Two-Sample

### Do you have Independent or Dependent Samples?

Independent Dependent## Means, Two-Sample, Independent

### Is Sigma:

Known Unknown, but assumed equal Unknown, but assumed unequal## Means, Two-Sample, Independent, Sigma Known

## Means, Two-Sample, Independent, Sigma Unknown and Equal

## Means, Two-Sample, Independent, Sigma UnKnown and Unequal

Use: Two-sample Independent t-Test for Means - Sigma Unequal

## Means, Two-Sample, Dependent

## Variability

### Do you have a One or Two-Sample test?

One Two## Variability, Two-Sample

### Do you Independent or Dependent Samples?

Independent Dependent## Variability, Two-Sample, Independent

### Can the populations be modeled with a Normal Distribution?

Yes No## Variability, Two-Sample, Independent, Normal

Use: Two-Sample F-Test

## Variability, Two-Sample, Independent, Non-Normal

## Variability, Two-Sample, Dependent

## Proportions

### Do you have a One or Two-Sample test?

One Two## Proportions, One-Sample

### Do you want an Exact Test?

Yes No## Proportions, One-Sample, Approximate Test

## Proportions, Two-Sample

### Do you have Independent or Dependent Samples?

Independent Dependent## Proportions, Two-Sample, Independent

### Do you want an Exact Test?

Yes No## Proportions, Two-Sample, Independent, Exact

## Proportions, Two-Sample, Independent, Approximate

## Proportions, Two-Sample, Dependent, Exact

## Proportions, Two-Sample, Dependent, Approximate

## Correlations

### Do you have a One or Two-Sample test?

One Two## Correlations, One-Sample

### Is the test for Rho = 0, or Rho = Non-Zero?

Zero Non-Zero## Correlations, One-Sample, Rho = 0 Test

Use: One-Sample Test for Rho = 0

See: Correlation Tests - Form or Mean/Dispersion Tests - Form