{
  "$schema": "./question-pack-v2.schema.json",
  "format": "math-drill-question-pack",
  "schemaVersion": 2,
  "kind": "market_sizing",
  "id": "example-neighborhood-market-sizing",
  "packVersion": "1.0",
  "title": "Example Neighborhood Market Sizing",
  "description": "An original demand-side exercise with three user-entered assumptions.",
  "publisher": "Example Learning Lab",
  "license": "CC BY 4.0",
  "templates": [
    {
      "id": "neighborhood-delivery-spend",
      "title": "Neighborhood Delivery Spend",
      "prompt": "Estimate annual spending on local grocery delivery in a city district.",
      "description": "Build a demand-side estimate from the addressable population, buyer participation, and annual spend per buyer.",
      "difficulty": "intermediate",
      "industry": "retail",
      "sizingType": "demand_side",
      "inputSteps": [
        {
          "id": "addressable-population",
          "label": "Addressable adult population",
          "inputKind": "integer",
          "required": true,
          "helperText": "Use the number of adults who could access the service.",
          "unit": "customers",
          "variableName": "population",
          "assumptionRange": {
            "min": 100000,
            "max": 200000,
            "unit": "customers"
          }
        },
        {
          "id": "buyer-rate",
          "label": "Share who buy grocery delivery",
          "inputKind": "percentage",
          "required": true,
          "helperText": "Enter 40% or 0.4 for forty percent.",
          "unit": "percentage",
          "variableName": "buyerRate",
          "assumptionRange": {
            "min": 0.3,
            "max": 0.6,
            "unit": "percentage"
          }
        },
        {
          "id": "annual-spend",
          "label": "Annual delivery spend per buyer",
          "inputKind": "currency",
          "required": true,
          "unit": "currency",
          "variableName": "annualSpend",
          "assumptionRange": {
            "min": 120,
            "max": 240,
            "unit": "currency"
          }
        }
      ],
      "finalFormula": {
        "expression": "population * buyerRate * annualSpend",
        "outputVariable": "marketValue",
        "roundingRule": "nearest_1m",
        "tolerance": {
          "type": "percentage",
          "value": 0.05
        }
      },
      "outputUnit": "currency",
      "rubric": [
        {
          "id": "structure",
          "label": "Structure",
          "maxPoints": 25
        },
        {
          "id": "assumptions",
          "label": "Assumptions",
          "maxPoints": 25
        },
        {
          "id": "math",
          "label": "Math",
          "maxPoints": 25
        },
        {
          "id": "units",
          "label": "Units",
          "maxPoints": 10
        },
        {
          "id": "sense_check",
          "label": "Sense-check",
          "maxPoints": 10
        },
        {
          "id": "interpretation",
          "label": "Interpretation",
          "maxPoints": 5
        }
      ],
      "senseCheck": {
        "prompt": "Choose one useful lens for checking whether the estimate is plausible.",
        "required": true,
        "interpretationOptions": [
          {
            "id": "compare-household-budget",
            "label": "Compare annual spend per buyer with a plausible grocery budget."
          },
          {
            "id": "test-adoption-range",
            "label": "Recalculate the estimate at the low and high ends of the adoption range."
          },
          {
            "id": "compare-local-category",
            "label": "Compare the implied category spend per household with a plausible local annual range."
          }
        ]
      }
    }
  ]
}