{
  "title": "Statistical Process Control Simulator",
  "author": "Brian Beaulieu",
  "version": "1.0.0",
  "methodology": {
    "framework": "Six Sigma DMAIC",
    "wikidata": "Q380179",
    "originalTheory": "Shewhart Control Charts (1931)",
    "ruleSet": "Western Electric Rules"
  },
  "constants": {
    "controlFactors": {
      "n4": {"A2": 0.729, "D3": 0, "D4": 2.282, "d2": 2.059},
      "n5": {"A2": 0.577, "D3": 0, "D4": 2.114, "d2": 2.326},
      "n10": {"A2": 0.308, "D3": 0.223, "D4": 1.777, "d2": 3.078}
    },
    "sigmaLevels": {
      "threeSigma": 99.73,
      "sixSigma": 99.9999998
    }
  },
  "westernElectricRules": [
    "Rule 1: Any point beyond 3-sigma control limits",
    "Rule 2: Seven consecutive points on one side of centerline",
    "Rule 3: Six consecutive points steadily increasing or decreasing",
    "Rule 4: Two of three consecutive points beyond 2-sigma",
    "Rule 5: Four of five consecutive points beyond 1-sigma",
    "Rule 6: Fifteen consecutive points within 1-sigma (over-control)"
  ],
  "capabilities": {
    "subgroupSizes": [4, 5, 10],
    "maxSamples": 100,
    "anomalyTypes": ["none", "mean-shift", "sigma-expand", "trend", "outlier"]
  },
  "citations": [
    {
      "source": "Wikidata Q380179",
      "url": "https://www.wikidata.org/wiki/Q380179",
      "description": "DMAIC methodology definition"
    },
    {
      "source": "Shewhart, W.A.",
      "work": "Economic Control of Quality of Manufactured Product",
      "year": 1931,
      "description": "Original control chart theory"
    }
  ]
}