easy · LSAT Logical Reasoning

The average salary earned by graduates of University X is higher than the average salary earned by graduates of University Y. Sarah concludes that she personally will earn more if she attends University X rather than University Y.

Which one of the following identifies the logical flaw in Sarah's reasoning?

  1. She assumes that University X enjoys a substantially greater overall reputation and prestige than University Y does.
  2. She treats a figure describing a group as though it dictated the outcome for each individual member of that group.
  3. She fails to weigh the considerable difference in yearly tuition costs between the two universities she names.
  4. She overlooks the possibility that University Y has produced a far larger number of total graduates than X has.
  5. She assumes that the salary advantage of University X graduates is certain to grow even larger over time.

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