Select Which Type of Design Best Describes your Analysis

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T-Tests

Compare the mean value of two independent groups on a single continuous outcome variable.

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Mann-Whitney Test

Non-parametric version of the t-test. Compare the average rank of two independent groups on a single ordinal outcome variable.

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One-Way ANOVA

Compare the mean value of three to five independent groups on a single continuous outcome variable.

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MANOVA

Compare the mean of two groups on multiple continuous outcome variables.

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Linear
Correlation

Examine the linear association between two continuous outcome variables.

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Monotonic
Corrrelation

Non-parametric version of the linear correlation. Examine the monotonic association between two ordinal outcome variables.

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Linear Regression (Main Effect Only)

Examine the linear association between a focal predictor on a continuous outcome, controlling for the level of other variables.

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Linear Regression (Main Effect with Interaction)

Examine the linear association between a focal predictor on a continuous outcome at a specific level of a moderating variable, controlling for the level of other variables.

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2 x 2 Contingency Table

Examine the linear association between two dichotomous variables.

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Logistic Regression

Examine the association between a focal dichotomous treatment on a binary outcome variable measuring a negative outcome, controlling for other variables.