Aggregation error

{
  "id": "MLC-T-CHM-000337",
  "term": "Aggregation error",
  "field": "Chemistry",
  "definition": "A type of bias that arises when data collected at a lower, individual level are combined or averaged to make inferences about a higher, group level, leading to incorrect conclusions. This error occurs because relationships observed at one scale may not hold true at another scale. It is a common concern in ecological and epidemiological studies when analyzing population data.",
  "subject": "Chemistry and Human Health",
  "see_also": [
    "Bayesian probability",
    "population"
  ],
  "references": [
    "PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 837 (https://doi.org/10.1351/PAC-REC-08-07-09)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/aggregation-error/"
}