Alpha Value
An alpha value is a number 0<=alpha<=1 such that P(z>=z_(observed))<=alpha is considered "significant," where P is a P-value.
See also
Confidence Interval, Hypothesis Testing, P-Value, SignificanceExplore with Wolfram|Alpha
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Cite this as:
Weisstein, Eric W. "Alpha Value." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/AlphaValue.html