To examine the opinions of individuals living in her jurisdiction, Gloria administers a survey outside of her local polling center on Election Day. However, she is weary of drawing conclusions about the population from this sample when she learns that people without a driver's license are unable to vote. As a result, she fears the opinions of elderly members of her community (who no longer drive or have a valid driver's license) may be unrepresented. Gloria is worried about:

Question

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Gloria is concerned about bias in her sample because it is not representative of the entire population due to the exclusion of elderly individuals who do not have a driver's license. This means that the opinions of this group may not be accurately reflected in her survey results, leading to bias.

To Examine the Opinions of Individuals Living in Her Jurisdiction