Final answer:
To calculate the size of a country's economy, you need to learn about investments, exports and imports, and government spending, but not about consumer savings.
Step-by-step explanation:
In order to calculate the size of a country's economy, you would need to learn about the following measurements:
- Investments that businesses in a country make, such as building factories.
- The value of goods and services that a country exports and imports.
- Government spending, such as on paving new highways.
However, you would not need to learn about the money that consumers living in a country save, such as money for retirement.