Hypothesis Testing

Internal Validity

External Validity

Confounding

Threats to Internal Validity

Pre-Test Post-Test Design

Pre-Test Post-Test Design

Pre-Test Post-Test Design

Pre-Test Post-Test Design

Benefits

Disadvantages

History

History

Maturation

Maturation

Testing

Testing

Related Measures t-test: Assumptions

When to use the related measures t-test

Hypothesis

Hypothesis

First: Calculate the Means

First: Calculate the Means

Evaluate Hypothesis

Evaluate Hypothesis

Evaluate Hypothesis

Evaluate Hypothesis

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test

Related Measured t-test