Statistical control chart limits

{
  "id": "MLC-T-ENV-026715",
  "term": "Statistical control chart limits",
  "field": "Environment",
  "definition": "The limits on control charts that have been derived by statistical analysis and are used as criteria for action, or for judging whether a set of data does or does not indicate lack of control. On a means control chart, the warning level may be two standard deviations above and below the mean, and the control limit may be three standard deviations above and below the mean.",
  "subject": "Air",
  "references": [
    "Radon Glossary of Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/statistical-control-chart-limits/"
}