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The process of calculating real GDP, also known as GDP at constant prices, begins with selecting a base year. For any subsequent year, real GDP is calculated by valuing the quantities of all goods and services produced in that year using the constant prices from the base year. If this calculated value increases, it signifies that the economy's actual output has grown. Conversely, if the value remains unchanged, it indicates that the overall quantity of output is constant and real economic growth is zero. This holds true even if the specific composition of goods and services has changed (e.g., more of one product and less of another were produced).

Calculating Real GDP Using a Base Year

An economy produces only two goods: bread and cars. The table below shows the prices and quantities produced for two consecutive years. Using Year 1 as the base year, calculate the real GDP for Year 2 and explain what the change from Year 1's GDP indicates about the economy's output.

Calculating and Interpreting Real Economic Growth

An economy's real gross domestic product, calculated using constant base-year prices, was unchanged between Year 1 and Year 2. Which of the following statements must be true based on this information?

An economy produces only two goods: laptops and smartphones. In a given year, the production of laptops increases significantly, while the production of smartphones decreases. When the total output for that year is calculated using constant prices from a base year, the final value is identical to the previous year's value. Based on this information, what can you conclude about the real economic growth of this economy? Explain your reasoning.

Interpreting Changes in Economic Output

An economy's total output valued at current market prices increased by 5% in one year, while its total output valued at constant base-year prices remained unchanged. This implies that the overall price level must have risen.

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