10072 IUPAC Gold Book - factor level 10.1351/goldbook.10072 10072 current synonym: level 1 Value of a factor in an experimental design. A design may be designated by the number of levels chosen for each factor, as in "two-level design". When writing an experimental design the levels are usually coded. coded experimental design https://goldbook.iupac.org//terms/view/10067 experimental design https://goldbook.iupac.org//terms/view/10071 PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 415 (https://doi.org/10.1515/pac-2015-0605) https://goldbook.iupac.org/terms/view/10072/html https://goldbook.iupac.org/terms/view/10072/json https://goldbook.iupac.org/terms/view/10072/plain Citation: 'factor level' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.10072 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-05-09T12:38:52+00:00