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Psychology Home
Statistics and Research Methods Workshops Home
Statistics Workshops
Research Methods Workshops
Videos
Introduction
Hypothesis Tests
Hypothesis Tests and Error
Error Table
Distributions and Error
Statistical Power
Power Calculations
Factors That Influence Statistical Power
Alpha Level
Sample Size
Effect Size
Directional Versus Nondirectional Tests
Maximizing Power
Applications
Summary
Practice Exercises
Workshop Quiz

Statistical Power
Power Calculations

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Now you try. What is the statistical power of your test if the alternative population had a mean of 4.0?

Now we are ready to review the factors that influence statistical power.

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