Guide to using the sample size calculator
Quick Start Guide
- Explanations of each variable pop up when your mouse is over the small icon at the end of the line
- This document has the step-by-step operating instructions
Hints and Suggestions
- How to estimate standard deviation
- Groups of different sizes
- Avoiding false hopes
- Avoiding missed opportunities
- Conservative testing
- Power calculations made after a test
- Minimum sample size and small groups
Higher Mathematics
- Detecting differences
- Two-sided and one-sided tests
- Detecting a reduced response
- Reduced sample size
- "Small sample" vs. "Large sample" tests
Resources
