ordinary least squares regression

synonym: classical least squares regression
initialism: OLSR
https://doi.org/10.1351/goldbook.10154

Least squares regression that minimizes the sum of squared differences between the known values of dependent variable and values predicted by a linear model.

Notes:
  1. Assumptions of the model are that error is only in the dependent variable, Normally-distributed, and homoscedastic.
  2. OLSR is used for calibration and multivariate calibration.
Source:
PAC, 2016, 88, 407. (Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)) on page 434 [Terms] [Paper]
Citation: 'ordinary 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. https://doi.org/10.1351/goldbook.10154 RIS BibTex EndNote
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