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Bias and Representative Samples
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ACT Prep
ACTM.218 Bias and Representative Samples
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A streaming service estimates average weekly viewing hours by surveying only users who rated at least five shows in the past month. What is the likely flaw?
A
The sample is representative because ratings are stored in the service database.
B
The sample is random because users choose which shows to rate.
C
The sample overrepresents highly active users who may watch more than typical users.
D
The sample is biased only if users rate shows on different devices.
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