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Critiquing Economic Analysis Based on Graphical Representation
An economic analyst presents a graph showing the GDP per capita for two countries from 1960 to 2020. The graph uses a standard linear (not ratio) scale on the vertical axis. The analyst notes that the absolute dollar difference between the richer country's GDP per capita and the poorer country's GDP per capita was much larger in 2020 than it was in 1960. Based on this observation alone, the analyst concludes that the poorer country's economy has been growing at a slower rate than the richer country's. Critique the analyst's conclusion. Is this conclusion necessarily valid? Explain your reasoning by discussing the properties of the scale used and what a different type of scale might reveal.
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