Mean centering

{
  "id": "MLC-T-CHM-007068",
  "term": "Mean centering",
  "field": "Chemistry",
  "definition": "A data pre-processing technique where the mean of each variable is subtracted from all values of that variable in a dataset. This transformation shifts the origin of the data to the centroid of the dataset, making it easier to interpret subsequent multivariate analyses. It is commonly applied before principal component analysis or other chemometric methods.",
  "synonyms": [
    "centering"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "scaling",
    "data pre-processing",
    "multivariate curve resolution",
    "partial least squares regression",
    "principal-component analysis"
  ],
  "references": [
    "PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 410 (https://doi.org/10.1515/pac-2015-0605)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/mean-centering/"
}