{"term":{"id":"10149","title":"least squares regression","longtitle":"IUPAC Gold Book - least squares regression","doi":"10.1351\/goldbook.10149","code":"10149","status":"current","initialism":"<em>initialism<\/em>: LSR","synonym":"<em>synonym<\/em>: LS regression","definitions":[{"id":1,"text":"Regression that minimizes the sum of squared differences between observed values of a variable and the values predicted by a model.","notes":{"1":"Least squares regression is used as a synonym for ordinary least squares regression. The full term should be used if there is ambiguity about the kind of regression being performed."},"links":[{"term":"ordinary least squares regression","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/10154"}],"sources":["PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 433 (https:\/\/doi.org\/10.1515\/pac-2015-0605)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/10149\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/10149\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/10149\/plain"},"citation":"Citation: 'least squares regression' 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.10149","license":"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.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"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.","accessed":"2026-08-06T05:44:24+00:00"}}