Title: score
Long Title: IUPAC Gold Book - score
DOI: 10.1351/goldbook.10112
Status: current

Definition
Factor analysis projection of an object onto a factor.

Notes
1) In principal-component analysis, the factors are orthogonal and the scores are an orthogonal projection of the objects onto a factor.
2) The scores on a factor reflect the relationships between objects for that factor.
3) The term scores (plural) refers to a whole column in the scores matrix that relates to a particular factor. The term score (singular) is the projection of a particular object onto the factor.

Related Terms
- Factor analysis: https://goldbook.iupac.org//terms/view/10093
- loading: https://goldbook.iupac.org//terms/view/10096
- principal-component analysis: https://goldbook.iupac.org//terms/view/10106

Source
- PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 424 (https://doi.org/10.1515/pac-2015-0605)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/10112/html
- json: https://goldbook.iupac.org/terms/view/10112/json
- xml: https://goldbook.iupac.org/terms/view/10112/xml

Citation: Citation: 'score' 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.10112
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: 2026-04-18T20:53:47+00:00