{
  "example_kind": "synthetic editorial worksheet; not product data/import",
  "layout": "lab",
  "dataset": {
    "heading": "Inspect the invented records",
    "headers": [
      "Completed item",
      "Elapsed days"
    ],
    "rows": [
      [
        "A",
        "2"
      ],
      [
        "B",
        "3"
      ],
      [
        "C",
        "4"
      ],
      [
        "D",
        "6"
      ],
      [
        "E",
        "10"
      ]
    ]
  },
  "derivation": "Sorted sample [2,3,4,6,10]; n=5; nearest rank for p=80 is ceiling(0.8×5)=4; selected value=6 days. At p=85 rank=5 and value=10: one rank step changes the result substantially.",
  "result": "Historical sample note: n=5; nearest-rank p80=6 days. No calibrated future deadline confidence is asserted; check unfinished work and changed conditions.",
  "boundaries": [
    [
      "Observed",
      "Five completed durations under one clock",
      "Supports a descriptive nearest-rank result."
    ],
    [
      "Unknown",
      "Future-item completion probability",
      "Do not turn this small sample into a promise."
    ],
    [
      "Next check",
      "Inspect unfinished ages and work-type changes",
      "Keep limitations attached to planning use."
    ]
  ],
  "sources": [
    "sre",
    "kanban"
  ],
  "related_existing": [
    "review-ai-averaging-unlike-work",
    "cli-sprint-metrics-review"
  ],
  "calculator": {
    "mode": "rank",
    "values": "2,3,4,6,10",
    "percentile": 80,
    "unit": "elapsed days"
  },
  "published_next_steps": [
    {
      "slug": "cli-sprint-metrics-review",
      "title": "Read sprint metrics without overstating delivery"
    }
  ],
  "method_references": [
    {
      "id": "sre",
      "title": "Google SRE monitoring",
      "url": "https://sre.google/workbook/monitoring/",
      "scope": "Distribution summaries; no task-delivery forecast is inferred from service latency guidance."
    },
    {
      "id": "kanban",
      "title": "The Kanban Guide, May 2025",
      "url": "https://kanbanguides.org/the-kanban-guide/2025.5/",
      "scope": "Clock and work-item definitions; examples and local rules are our own."
    }
  ]
}