{
  "id": "quartile-calculator",
  "version": "1.0.0",
  "name": "Quartile Calculator",
  "shortName": "Quartile",
  "description": "Calculate quartiles, the interquartile range, fences, and five-number summary.",
  "category": "Math & Statistics",
  "categorySlug": "math-statistics",
  "keywords": [
    "quartile",
    "calculator",
    "quartile calculator"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/quartile-calculator.json",
    "qualifiedReview": "pending",
    "qualifiedReviewer": null,
    "qualifiedReviewDate": null,
    "formulaVersion": "1.0.0",
    "referenceCoverage": "references-pending",
    "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
    "historicalMetadataDate": "2026-09-01",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "urls": {
    "page": "/calculator/quartile-calculator/",
    "definition": "/calculator/quartile-calculator/definition.json",
    "schema": "/calculator/quartile-calculator/schema.json",
    "llms": "/calculator/quartile-calculator/llms.txt",
    "legacyDefinition": "/calculator/quartile-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/quartile-calculator/?data=4%2C+7%2C+7%2C+9%2C+12%2C+15%2C+18%2C+21",
  "queryParameters": {
    "data": {
      "label": "Data values (comma or space separated)",
      "type": "text",
      "required": true,
      "default": "4, 7, 7, 9, 12, 15, 18, 21"
    }
  },
  "inputs": [
    {
      "id": "data",
      "label": "Data values (comma or space separated)",
      "type": "text",
      "required": true,
      "defaultValue": "4, 7, 7, 9, 12, 15, 18, 21",
      "placeholder": "Example: 4, 7, 9, 12"
    }
  ],
  "outputs": [
    {
      "id": "q1",
      "label": "First quartile Q1",
      "format": "number"
    },
    {
      "id": "q2",
      "label": "Median Q2",
      "format": "number",
      "primary": true
    },
    {
      "id": "q3",
      "label": "Third quartile Q3",
      "format": "number"
    },
    {
      "id": "iqr",
      "label": "Interquartile range",
      "format": "number"
    },
    {
      "id": "lowerFence",
      "label": "Lower outlier fence",
      "format": "number"
    },
    {
      "id": "upperFence",
      "label": "Upper outlier fence",
      "format": "number"
    }
  ],
  "formula": {
    "expression": "IQR = Q3 − Q1; Tukey fences = Q1 − 1.5IQR and Q3 + 1.5IQR"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "data": "4, 7, 7, 9, 12, 15, 18, 21"
      }
    }
  ],
  "sources": []
}