medium · GMAT Verbal
To gauge the national popularity of a new streaming service, a polling firm surveys one thousand users who downloaded the app during its first week of 'early access.' The firm concludes that the service will be a massive hit with the general public.
What is the primary logical flaw in this generalization?
- The poll never records how much money each individual respondent actually paid in order to gain access to the service.
- A sample of one thousand respondents is simply incapable of representing a national population of millions.
- The polling firm conducting this survey may well have a financial incentive to report unusually favorable results for the service.
- The sample of early adopters is unlikely to represent the preferences of the general public, introducing selection bias.
- The poll completely ignores the very real chance that some of these early users will cancel their plans after the first month.
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