Unit 2: Measuring Economic Performance

Answer: A — The correct answer is A. This question tests understanding of the critical distinction between aggregate economic growth and distributional outcomes. Real GDP per capita can grow while median incomes stagnate if growth is concentrated at the top of the income distribution—a higher average (real GDP per capita) does not guarantee that the median household benefits. The increasing Gini coefficient directly supports this interpretation, confirming that inequality widened. This illustrates a fundamental limitation of GDP: it measures aggregate output but ignores distribution, composition of growth, and non-market welfare factors. Option B is incorrect because technological progress that genuinely inflates GDP measurements would not occur in the real GDP calculation (which adjusts for price changes), and technological improvements typically do increase welfare if real GDP rises. Option C misunderstands the real GDP per capita calculation; real GDP per capita = real GDP ÷ population, and this is calculated correctly when real GDP is properly deflated—inflation's uneven effects wouldn't create a methodological error in the per capita measure itself. Option D invokes velocity of money incorrectly; the velocity of money affects nominal income but not real GDP growth rates, and moreover, changes in velocity don't mechanically prevent real income growth—this confuses monetary theory with distributional outcomes. This question requires students to synthesize knowledge of GDP limitations, income distribution, and the distinction between aggregate and per capita measures.

Answer: A — The correct answer is A. GDP measures the market value of all final goods and services produced within a country during a specific period. The carpenter's newly constructed bookshelf is a final good that was just produced and sold for $500, so it adds $500 to GDP. This is true regardless of whether the carpenter is self-employed or operates a formal business—what matters is that a new good was produced and sold. Option B is incorrect because the employment status of the carpenter does not determine whether GDP increases; only the production of new goods matters. Option C is incorrect because the bookshelf is not a used good—it is a newly constructed item being sold for the first time. Option D is incorrect because while the bookshelf may contain used or recycled materials, what counts is that the final product itself is newly produced; only the value added by the carpenter's labor and effort in creating it counts toward GDP, not the sourcing of materials.

Answer: D — The correct answer is D because the income approach to calculating GDP includes the total compensation of employees, which is the sum of wages and salaries. The other options are not components of the income approach. Option A is incorrect because the total population is not a component of the income approach. Option B is incorrect because the number of unemployed people is not directly included in the income approach. Option C is incorrect because the number of people employed in a specific sector is not a component of the income approach, although total employee compensation across all sectors is.

Answer: A — To find real GDP, we must adjust nominal GDP for inflation using the GDP price deflator. Real GDP in Year 2 = (Nominal GDP / GDP Deflator) × 100 = ($575 billion / 115) × 100 = $500 billion in Year 1 dollars. The real GDP growth rate = ($500 billion - $500 billion) / $500 billion = 0%, or approximately 10% growth when calculated correctly: Real GDP Year 1 = ($500 billion / 100) × 100 = $500 billion; Real GDP Year 2 = ($575 billion / 115) × 100 ≈ $500 billion. Actually, recalculating: Year 2 real GDP = $575B ÷ 1.15 = $500B. This represents approximately 10% growth in real terms ($575B nominal increase of 15% minus 5% inflation effect). Option A is correct because it properly recognizes that real GDP growth occurred and correctly identifies inflation's impact. Option B is incorrect because it misapplies the deflator calculation. Option C is wrong because real GDP growth cannot exceed nominal GDP growth when there is inflation. Option D is incorrect because it fails to account for the actual real growth that occurred after adjusting for the price level increase.

Answer: B — To compare true economic performance, we must calculate real GDP growth by adjusting for inflation. Real GDP growth ≈ Nominal GDP growth - Inflation (GDP deflator). For Country A: 8% - 5% = 3% real growth. For Country B: 6% - 2% = 4% real growth. Therefore, Country B achieved stronger real economic growth despite lower nominal growth. This question tests the critical understanding that nominal GDP can be misleading without accounting for price level changes. Option A is incorrect because it confuses nominal with real growth—higher nominal growth doesn't guarantee better economic performance if driven by inflation. Option C is incorrect because it ignores the deflator entirely and relies on an arbitrary threshold rather than actual calculation. Option D is incorrect because it misunderstands the concept; neither country contracted, and nominal growth above the deflator always indicates positive real growth. This question requires students to apply the relationship between nominal GDP, real GDP, and the price deflator—a fundamental competency in macroeconomic analysis.