medium · LSAT Logical Reasoning
The average household income in Greenville has risen steadily for the past five years. Therefore, most families in Greenville are better off financially than they were five years ago.
The argument's reasoning is questionable because it
- Infers that a majority of individuals gained simply because the group's mean figure went up.
- Disregards how inflation may have eroded the purchasing power of those incomes.
- Assumes that financial well-being is captured wholly by household income.
- Uses past trends to forecast what will happen to incomes in the future.
- Presumes that no Greenville family experienced any decline in income at all.
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More LSAT Logical Reasoning practice
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