{
  "$schema": "./question-pack-v2.schema.json",
  "format": "math-drill-question-pack",
  "schemaVersion": 2,
  "kind": "exhibit",
  "id": "example-visualization-cookbook",
  "packVersion": "1.0",
  "title": "Example Exhibit Visualization Cookbook",
  "description": "Eight compact original exhibits demonstrating every supported visualization and both exhibit response types.",
  "publisher": "Example Learning Lab",
  "license": "CC BY 4.0",
  "datasets": [
    {
      "id": "regional-customer-table",
      "title": "Customers by Region",
      "description": "A service provider reports active customers in three regions.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "customers",
      "columns": [
        {
          "id": "region",
          "label": "Region",
          "role": "dimension",
          "valueType": "text"
        },
        {
          "id": "active_customers",
          "label": "Active customers",
          "role": "metric",
          "valueType": "number",
          "unit": "customers"
        }
      ],
      "rows": [
        {
          "id": "north",
          "cells": {
            "region": "North",
            "active_customers": 480
          }
        },
        {
          "id": "central",
          "cells": {
            "region": "Central",
            "active_customers": 620
          }
        },
        {
          "id": "south",
          "cells": {
            "region": "South",
            "active_customers": 550
          }
        }
      ],
      "visualization": {
        "type": "table",
        "title": "Active Customers",
        "selectedColumnIds": ["region", "active_customers"]
      },
      "questions": [
        {
          "id": "total-active-customers",
          "responseType": "numeric",
          "difficulty": "beginner",
          "prompt": "How many active customers are shown in total?",
          "tags": ["addition"],
          "answer": {
            "value": 1650,
            "unit": "customers",
            "roundingRule": "exact"
          },
          "explanation": {
            "short": "Add the customer counts for all three regions.",
            "steps": ["480 + 620 + 550 = 1,650 customers."]
          },
          "expectedTimeSeconds": 30
        }
      ]
    },
    {
      "id": "lead-source-bar-chart",
      "title": "Qualified Leads by Source",
      "description": "A business compares quarterly qualified leads across acquisition sources.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "users",
      "columns": [
        {
          "id": "source",
          "label": "Source",
          "role": "dimension",
          "valueType": "text"
        },
        {
          "id": "quarter_1",
          "label": "Quarter 1 leads",
          "role": "metric",
          "valueType": "number",
          "unit": "users"
        },
        {
          "id": "quarter_2",
          "label": "Quarter 2 leads",
          "role": "metric",
          "valueType": "number",
          "unit": "users"
        }
      ],
      "rows": [
        {
          "id": "referrals",
          "cells": {
            "source": "Referrals",
            "quarter_1": 400,
            "quarter_2": 520
          }
        },
        {
          "id": "search",
          "cells": {
            "source": "Search",
            "quarter_1": 650,
            "quarter_2": 720
          }
        },
        {
          "id": "partnerships",
          "cells": {
            "source": "Partnerships",
            "quarter_1": 280,
            "quarter_2": 460
          }
        }
      ],
      "visualization": {
        "type": "bar_chart",
        "title": "Qualified Leads by Source and Quarter",
        "xColumnId": "source",
        "yColumnIds": ["quarter_1", "quarter_2"]
      },
      "questions": [
        {
          "id": "largest-lead-increase",
          "responseType": "multiple_choice",
          "difficulty": "beginner",
          "prompt": "Which source had the largest increase in qualified leads from Quarter 1 to Quarter 2?",
          "tags": ["subtraction"],
          "choices": [
            {
              "id": "referrals",
              "label": "Referrals"
            },
            {
              "id": "search",
              "label": "Search"
            },
            {
              "id": "partnerships",
              "label": "Partnerships"
            }
          ],
          "correctChoiceId": "partnerships",
          "explanation": {
            "short": "Partnerships produced the largest quarter-over-quarter increase.",
            "steps": ["Referrals increased by 120, Search by 70, and Partnerships by 180 leads."]
          },
          "expectedTimeSeconds": 40
        }
      ]
    },
    {
      "id": "revenue-line-chart",
      "title": "Annual Subscription Revenue",
      "description": "A subscription company tracks revenue over three years; currency values are stored in full base units.",
      "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"
        }
      ],
      "rows": [
        {
          "id": "year-2024",
          "cells": {
            "year": 2024,
            "revenue": 24000000
          }
        },
        {
          "id": "year-2025",
          "cells": {
            "year": 2025,
            "revenue": 30000000
          }
        },
        {
          "id": "year-2026",
          "cells": {
            "year": 2026,
            "revenue": 39000000
          }
        }
      ],
      "visualization": {
        "type": "line_chart",
        "title": "Annual Subscription Revenue",
        "xColumnId": "year",
        "yColumnIds": ["revenue"]
      },
      "questions": [
        {
          "id": "latest-revenue-increase",
          "responseType": "numeric",
          "difficulty": "beginner",
          "prompt": "By how much did revenue increase from 2025 to 2026?",
          "tags": ["subtraction", "revenue"],
          "answer": {
            "value": 9000000,
            "unit": "currency",
            "roundingRule": "exact"
          },
          "explanation": {
            "short": "Subtract 2025 revenue from 2026 revenue.",
            "steps": ["$39 million - $30 million = $9 million."]
          },
          "expectedTimeSeconds": 30
        }
      ]
    },
    {
      "id": "account-mix-pie-chart",
      "title": "Customer Accounts by Tier",
      "description": "A software company shows its account mix across three customer tiers.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "customers",
      "columns": [
        {
          "id": "tier",
          "label": "Customer tier",
          "role": "dimension",
          "valueType": "text"
        },
        {
          "id": "accounts",
          "label": "Accounts",
          "role": "metric",
          "valueType": "number",
          "unit": "customers"
        }
      ],
      "rows": [
        {
          "id": "small-business",
          "cells": {
            "tier": "Small business",
            "accounts": 150
          }
        },
        {
          "id": "mid-market",
          "cells": {
            "tier": "Mid-market",
            "accounts": 120
          }
        },
        {
          "id": "enterprise",
          "cells": {
            "tier": "Enterprise",
            "accounts": 80
          }
        }
      ],
      "visualization": {
        "type": "pie_chart",
        "title": "Account Mix by Tier",
        "categoryColumnId": "tier",
        "valueColumnId": "accounts"
      },
      "questions": [
        {
          "id": "largest-account-tier",
          "responseType": "multiple_choice",
          "difficulty": "beginner",
          "prompt": "Which customer tier represents the largest share of accounts?",
          "tags": ["ratio_conversion"],
          "choices": [
            {
              "id": "small-business",
              "label": "Small business"
            },
            {
              "id": "mid-market",
              "label": "Mid-market"
            },
            {
              "id": "enterprise",
              "label": "Enterprise"
            }
          ],
          "correctChoiceId": "small-business",
          "explanation": {
            "short": "Small business has the largest account count and therefore the largest pie slice.",
            "steps": ["Small business has 150 accounts, compared with 120 Mid-market and 80 Enterprise accounts."]
          },
          "expectedTimeSeconds": 25
        }
      ]
    },
    {
      "id": "training-quality-scatterplot",
      "title": "Training and Quality by Site",
      "description": "Four operating sites compare monthly training hours with quality scores; the scatterplot declares one Y series.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "none",
      "columns": [
        {
          "id": "site",
          "label": "Site",
          "role": "dimension",
          "valueType": "text"
        },
        {
          "id": "training_hours",
          "label": "Training hours per employee",
          "role": "metric",
          "valueType": "number",
          "unit": "none"
        },
        {
          "id": "quality_score",
          "label": "Quality score",
          "role": "metric",
          "valueType": "number",
          "unit": "none"
        }
      ],
      "rows": [
        {
          "id": "site-a",
          "cells": {
            "site": "Site A",
            "training_hours": 8,
            "quality_score": 78
          }
        },
        {
          "id": "site-b",
          "cells": {
            "site": "Site B",
            "training_hours": 12,
            "quality_score": 86
          }
        },
        {
          "id": "site-c",
          "cells": {
            "site": "Site C",
            "training_hours": 15,
            "quality_score": 91
          }
        },
        {
          "id": "site-d",
          "cells": {
            "site": "Site D",
            "training_hours": 10,
            "quality_score": 82
          }
        }
      ],
      "visualization": {
        "type": "scatterplot",
        "title": "Training Hours Versus Quality Score",
        "categoryColumnId": "site",
        "xColumnId": "training_hours",
        "yColumnIds": ["quality_score"]
      },
      "questions": [
        {
          "id": "highest-quality-site",
          "responseType": "multiple_choice",
          "difficulty": "beginner",
          "prompt": "Which site has the highest quality score?",
          "tags": ["mixed_operations"],
          "choices": [
            {
              "id": "site-a",
              "label": "Site A"
            },
            {
              "id": "site-b",
              "label": "Site B"
            },
            {
              "id": "site-c",
              "label": "Site C"
            },
            {
              "id": "site-d",
              "label": "Site D"
            }
          ],
          "correctChoiceId": "site-c",
          "explanation": {
            "short": "Site C is the highest point on the quality-score axis.",
            "steps": ["Site C has a quality score of 91, the highest of the four sites."]
          },
          "expectedTimeSeconds": 25
        }
      ]
    },
    {
      "id": "customer-source-stacked-bar",
      "title": "Customers by Region and Source",
      "description": "Regional customer totals are split between new customers and renewals.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "customers",
      "columns": [
        {
          "id": "region",
          "label": "Region",
          "role": "dimension",
          "valueType": "text"
        },
        {
          "id": "new_customers",
          "label": "New customers",
          "role": "metric",
          "valueType": "number",
          "unit": "customers"
        },
        {
          "id": "renewals",
          "label": "Renewals",
          "role": "metric",
          "valueType": "number",
          "unit": "customers"
        }
      ],
      "rows": [
        {
          "id": "east",
          "cells": {
            "region": "East",
            "new_customers": 340,
            "renewals": 660
          }
        },
        {
          "id": "west",
          "cells": {
            "region": "West",
            "new_customers": 290,
            "renewals": 610
          }
        },
        {
          "id": "north",
          "cells": {
            "region": "North",
            "new_customers": 260,
            "renewals": 540
          }
        }
      ],
      "visualization": {
        "type": "stacked_bar",
        "title": "Customers by Region and Source",
        "xColumnId": "region",
        "yColumnIds": ["new_customers", "renewals"]
      },
      "questions": [
        {
          "id": "east-total-customers",
          "responseType": "numeric",
          "difficulty": "beginner",
          "prompt": "What is the East region's total customer count?",
          "tags": ["addition"],
          "answer": {
            "value": 1000,
            "unit": "customers",
            "roundingRule": "exact"
          },
          "explanation": {
            "short": "Add both stacked components for the East region.",
            "steps": ["340 new customers + 660 renewals = 1,000 customers."]
          },
          "expectedTimeSeconds": 30
        }
      ]
    },
    {
      "id": "performance-index-chart",
      "title": "Price and Volume Indices",
      "description": "Price and volume are already indexed to a 2024 base of 100; the app plots the authored index values without recalculating them.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "none",
      "columns": [
        {
          "id": "year",
          "label": "Year",
          "role": "dimension",
          "valueType": "year"
        },
        {
          "id": "price_index",
          "label": "Price index",
          "role": "metric",
          "valueType": "number",
          "unit": "none"
        },
        {
          "id": "volume_index",
          "label": "Volume index",
          "role": "metric",
          "valueType": "number",
          "unit": "none"
        }
      ],
      "rows": [
        {
          "id": "year-2024",
          "cells": {
            "year": 2024,
            "price_index": 100,
            "volume_index": 100
          }
        },
        {
          "id": "year-2025",
          "cells": {
            "year": 2025,
            "price_index": 107,
            "volume_index": 104
          }
        },
        {
          "id": "year-2026",
          "cells": {
            "year": 2026,
            "price_index": 115,
            "volume_index": 110
          }
        }
      ],
      "visualization": {
        "type": "index_chart",
        "title": "Price and Volume Indices, 2024 = 100",
        "xColumnId": "year",
        "yColumnIds": ["price_index", "volume_index"]
      },
      "questions": [
        {
          "id": "index-gap-2026",
          "responseType": "numeric",
          "difficulty": "beginner",
          "prompt": "How many index points separate the price and volume indices in 2026?",
          "tags": ["subtraction"],
          "answer": {
            "value": 5,
            "unit": "none",
            "roundingRule": "exact"
          },
          "explanation": {
            "short": "Subtract the two authored 2026 index values.",
            "steps": ["115 price-index points - 110 volume-index points = 5 index points."]
          },
          "expectedTimeSeconds": 25
        }
      ]
    },
    {
      "id": "profit-waterfall",
      "title": "Operating Profit Bridge",
      "description": "Ordered deltas bridge starting profit to an ending-profit total; the final total row stores the absolute ending value.",
      "sourceNote": "Synthetic figures created for this example.",
      "unit": "currency",
      "columns": [
        {
          "id": "driver",
          "label": "Driver",
          "role": "dimension",
          "valueType": "text"
        },
        {
          "id": "impact",
          "label": "Profit impact",
          "role": "metric",
          "valueType": "currency",
          "unit": "currency"
        }
      ],
      "rows": [
        {
          "id": "starting-profit",
          "cells": {
            "driver": "Starting profit",
            "impact": 50000000
          }
        },
        {
          "id": "price",
          "cells": {
            "driver": "Price",
            "impact": 5000000
          }
        },
        {
          "id": "volume",
          "cells": {
            "driver": "Volume",
            "impact": 8000000
          }
        },
        {
          "id": "labor",
          "cells": {
            "driver": "Labor cost",
            "impact": -12000000
          }
        },
        {
          "id": "overhead",
          "cells": {
            "driver": "Overhead",
            "impact": -7000000
          }
        },
        {
          "id": "ending-profit",
          "cells": {
            "driver": "Ending profit",
            "impact": 44000000
          }
        }
      ],
      "visualization": {
        "type": "waterfall",
        "title": "Operating Profit Bridge",
        "xColumnId": "driver",
        "yColumnIds": ["impact"],
        "totalRowIds": ["ending-profit"]
      },
      "questions": [
        {
          "id": "ending-operating-profit",
          "responseType": "numeric",
          "difficulty": "intermediate",
          "prompt": "What ending operating profit does the bridge produce?",
          "tags": ["mixed_operations", "profit"],
          "answer": {
            "value": 44000000,
            "unit": "currency",
            "roundingRule": "exact"
          },
          "explanation": {
            "short": "Apply the ordered deltas to starting profit and compare the result with the absolute total row.",
            "steps": ["$50 million + $5 million + $8 million - $12 million - $7 million = $44 million.", "The ending-profit row therefore stores the absolute value $44 million."]
          },
          "expectedTimeSeconds": 45
        }
      ]
    }
  ]
}