An advertisement for an upcoming TV show asked: "Should...

An advertisement for an upcoming TV show asked: "Should handgun control be tougher? You call the shots in a special call-in poll tonight. If Charge is 50 cents for the first minute." Over $90 \%$ of people who called in said "Yes." Fxplain why this opinion poll is almost certainly biased.

An advertisement for an upcoming TV show asked: "Should handgun control be tougher? You call the shots in a special call-in poll tonight. If
Charge is 50 cents for the first minute." Over $90 \%$ of people who called in said "Yes." Fxplain why this opinion poll is almost certainly biased.

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Key Concepts

Sampling Bias

Sampling bias occurs when the individuals included in a survey are not representative of the larger population. In many polls, the method of selecting survey participants can inadvertently favor certain groups over others, meaning the results may not accurately reflect the opinions of the entire population.

Self-Selection Bias

Self-selection bias is a specific type of sampling bias where participants choose themselves to be involved in the survey rather than being randomly selected. This can result in a skewed set of responses because the people who decide to participate often have stronger opinions or a vested interest in the topic, thereby distorting the overall outcomes.

Question Wording Bias

Question wording bias happens when the phrasing of a survey question influences respondents to answer in a particular way. If questions are framed in a leading or suggestive manner, they may steer the survey participants toward a predetermined answer, which can significantly impact the reliability of the poll results.

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