What is a reason that these data may be unreliable?
it is information that is too old to be...
What is a reason that these data may be unreliable?
it is information that is too old to be considered factual.
it was found on the american cancer society website, and websites are unreliable.
it is information that is used for a variety of purposes and not just gathered for research.
it is from a self-reporting survey, and teens may not want to answer the questions honestly.
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