Decide whether a report overgeneralizes beyond its data
Problem
Does this conclusion overgeneralize beyond the data: a survey of one gym's members claims that all adults prefer morning workouts?
Big Picture
What this problem is really about
Underline the group actually observed and the population named in the conclusion. A narrow, self-selected, or location-specific group does not automatically represent every member of a much broader population, even when the sampled people share one broad characteristic with that population. Limit the conclusion to the observed or design-supported group unless suitable sampling evidence justifies expansion.
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