The calculation of GDP does NOT include the value of:________1. Michelin tires purchased by Canadian car collectors. 2. Goodyear tires purchased by the United States Secret Service. 3. Bridgestone tires purchased by Ford Motor Co. 4. Firestone tires sold at your local garage.

GDP refers to the total value of all the goods and services produced in a country. Calculation of GDP involves adding up all the values of finished goods and services and multiplying them by their prices. For accuracy purposes, and to avoid double-counting, economists consider finished consumable products only.

When capital goods are included in GDP, they are likely to be counted again in the final product. The tires purchased by the car collectors, secret services, and at the garage are for consumption. The customers will use them as the end products. Tires purchased by Ford motors will be used in the production of motor vehicles. They are capital goods or goods used in manufacturing other goods. They are not included in GDP calculation.