Alpha level
The probability threshold chosen before analysis for controlling the long-run rate of false-positive decisions under the null hypothesis.
How to interpret it
It is commonly set to .05, but the appropriate value depends on the consequences of an error and the analysis plan.
Related practical guides
- Eta Squared vs Partial Eta Squared: Which Effect Size Should You Report?
- Confidence Intervals for Proportions: Wald, Wilson, and Exact Methods
- Which Statistical Test Should I Use? A Practical Decision Guide