{
  "$schema": "./question-pack-v2.schema.json",
  "format": "math-drill-question-pack",
  "schemaVersion": 2,
  "kind": "exhibit",
  "id": "example-consulting-chart-exhibits",
  "packVersion": "1.0",
  "title": "Example Consulting Bar and Line Charts",
  "description": "Two original exhibits demonstrating complete bar-chart and line-chart datasets with deterministic questions.",
  "publisher": "Example Learning Lab",
  "license": "CC BY 4.0",
  "datasets": [
    {
      "id": "sector-revenue-comparison",
      "title": "Revenue by Client Sector",
      "description": "A professional-services firm compares revenue across four client sectors for 2024 and 2025.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "currency",
      "columns": [
        {
          "id": "sector",
          "label": "Client sector",
          "role": "dimension",
          "valueType": "text"
        },
        {
          "id": "revenue_2024",
          "label": "2024 revenue",
          "role": "metric",
          "valueType": "currency",
          "unit": "currency"
        },
        {
          "id": "revenue_2025",
          "label": "2025 revenue",
          "role": "metric",
          "valueType": "currency",
          "unit": "currency"
        }
      ],
      "rows": [
        {
          "id": "consumer",
          "label": "Consumer",
          "cells": {
            "sector": "Consumer",
            "revenue_2024": 72000000,
            "revenue_2025": 81000000
          }
        },
        {
          "id": "industrials",
          "label": "Industrials",
          "cells": {
            "sector": "Industrials",
            "revenue_2024": 64000000,
            "revenue_2025": 76000000
          }
        },
        {
          "id": "healthcare",
          "label": "Healthcare",
          "cells": {
            "sector": "Healthcare",
            "revenue_2024": 58000000,
            "revenue_2025": 69000000
          }
        },
        {
          "id": "technology",
          "label": "Technology",
          "cells": {
            "sector": "Technology",
            "revenue_2024": 86000000,
            "revenue_2025": 103000000
          }
        }
      ],
      "visualization": {
        "type": "bar_chart",
        "title": "Revenue by Client Sector ($m)",
        "xColumnId": "sector",
        "yColumnIds": ["revenue_2024", "revenue_2025"]
      },
      "questions": [
        {
          "id": "technology-revenue-increase",
          "responseType": "numeric",
          "difficulty": "beginner",
          "prompt": "By how much did Technology revenue increase from 2024 to 2025?",
          "tags": ["subtraction", "revenue"],
          "answer": {
            "value": 17000000,
            "unit": "currency",
            "roundingRule": "exact"
          },
          "explanation": {
            "short": "Subtract Technology's 2024 revenue from its 2025 revenue.",
            "steps": ["$103 million - $86 million = $17 million."],
            "shortcut": "Count from 86 to 100, then add the remaining 3."
          },
          "expectedTimeSeconds": 30
        }
      ]
    },
    {
      "id": "subscription-business-trend",
      "title": "Subscription Business Financial Trend",
      "description": "A subscription business tracks revenue and operating cost over four years.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "currency",
      "columns": [
        {
          "id": "year",
          "label": "Year",
          "role": "dimension",
          "valueType": "year"
        },
        {
          "id": "revenue",
          "label": "Revenue",
          "role": "metric",
          "valueType": "currency",
          "unit": "currency"
        },
        {
          "id": "operating_cost",
          "label": "Operating cost",
          "role": "metric",
          "valueType": "currency",
          "unit": "currency"
        }
      ],
      "rows": [
        {
          "id": "year-2023",
          "label": "2023",
          "cells": {
            "year": 2023,
            "revenue": 90000000,
            "operating_cost": 72000000
          }
        },
        {
          "id": "year-2024",
          "label": "2024",
          "cells": {
            "year": 2024,
            "revenue": 108000000,
            "operating_cost": 82000000
          }
        },
        {
          "id": "year-2025",
          "label": "2025",
          "cells": {
            "year": 2025,
            "revenue": 132000000,
            "operating_cost": 94000000
          }
        },
        {
          "id": "year-2026",
          "label": "2026",
          "cells": {
            "year": 2026,
            "revenue": 159000000,
            "operating_cost": 107000000
          }
        }
      ],
      "visualization": {
        "type": "line_chart",
        "title": "Revenue and Operating Cost ($m)",
        "xColumnId": "year",
        "yColumnIds": ["revenue", "operating_cost"]
      },
      "questions": [
        {
          "id": "operating-profit-2026",
          "responseType": "numeric",
          "difficulty": "beginner",
          "prompt": "What was operating profit in 2026 if operating profit equals revenue minus operating cost?",
          "tags": ["subtraction", "profit"],
          "answer": {
            "value": 52000000,
            "unit": "currency",
            "roundingRule": "exact"
          },
          "explanation": {
            "short": "Subtract 2026 operating cost from 2026 revenue.",
            "steps": ["$159 million - $107 million = $52 million."],
            "shortcut": "Subtract 100, then subtract the remaining 7."
          },
          "expectedTimeSeconds": 30
        }
      ]
    }
  ]
}