Regression that minimizes the sum of squared differences between observed values of a variable and the values predicted by a model.
Note: 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.
Source:
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)