Data Aggregator

Example Input

[
  {
    "category": "Electronics",
    "product": "Laptop",
    "price": 1200,
    "quantity": 5
  },
  {
    "category": "Electronics",
    "product": "Phone",
    "price": 800,
    "quantity": 10
  },
  {
    "category": "Books",
    "product": "JavaScript Guide",
    "price": 40,
    "quantity": 20
  }
]

Example Operations:

• Count total products by category
• Calculate average price per category
• Find minimum and maximum prices
• Get unique product names
• Calculate total inventory value (price × quantity)