These are findings obtained from surveys that ask questions to random samples of people, often used to gauge public opinion on various issues or predict election outcomes.
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Margin of Error: The range within which poll results are expected to differ from actual public opinion due to sampling variability. Like measuring something with a ruler that has slightly inaccurate markings - it gives you an idea but isn't 100% precise.
Exit Polls: Surveys conducted as voters leave their polling places, used primarily by news organizations in order to predict election winners before official counts are available. Like asking moviegoers their thoughts right after they've seen a film - it gives immediate feedback but doesn't necessarily reflect everyone's views who watched it later at home.
Random Sampling: A method of selecting individuals for a study or poll in such a way that every person has an equal chance of being selected. It's like pulling names out of a hat to decide who gets to go first in a game.