Cumulative sum control chart

{
  "id": "MLC-T-CHM-002786",
  "term": "Cumulative sum control chart",
  "field": "Chemistry",
  "definition": "A statistical process control chart that plots the cumulative sum of deviations of individual sample values from a target value. This chart is particularly effective at detecting small, persistent shifts in a process mean more quickly than a standard Shewhart control chart. It is widely used in analytical chemistry for monitoring the stability and performance of analytical methods over time.",
  "synonyms": [
    "CUSUM chart"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "control chart",
    "out-of-control criteria",
    "repeatability condition of measurement"
  ],
  "references": [
    "PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1024 (https://doi.org/10.1515/pac-2019-0819)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/cumulative-sum-control-chart/"
}