Testing
This is an area to collect information, techniques, and other resources that are invaluable to understanding and running tests the best way that we know today.
Free Resources
Statistical Calculators
- Sample Size Calculator by Search Discovery
- Bayesian Test Analysis by AB Test Guide
- Chi Squared Goodness of Fit (useful for checking sample mismatch)
- Simple Sequential Testing sample/threshold Calculator by Evan Miller
Website QA Utilities
- GeoPeeker: Allows you to view screenshots of any public URL from IP locations around the globe
- Accessibility Checker: Allows you to enter any public URL and received calculated feedback on site accessibility for vision impaired, etc.
