confidence level 

https://doi.org/10.1351/goldbook.C01246
The probability of covering the expected value of an estimated parameter with an interval estimated for the parameter (symbol 1−α). The confidence level can be expressed as a number between 0 and 1, or in percent. The complementary quantity is known as the significance level.
Note:
In some cases the confidence level is dictated by the needs of the situation. In all other instances, use of 1−α=0.95 is recommended.
Source:
PAC, 1994, 66, 595. (Nomenclature for the presentation of results of chemical analysis (IUPAC Recommendations 1994)) on page 599 [Terms] [Paper]
Citation: 'confidence level' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C01246 RIS BibTex EndNote
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Last revised: February 24, 2014