## Quick Reference

The probability, in a hypothesis test, of rejecting the null hypothesis when it is, in fact, true. Usually called the significance level.

**From:**
alpha
in
A Dictionary of Statistics »

*Subjects:*
Probability and Statistics.

Overview

The probability, in a hypothesis test, of rejecting the null hypothesis when it is, in fact, true. Usually called the significance level.

**From:**
alpha
in
A Dictionary of Statistics »

*Subjects:*
Probability and Statistics.