This is the current revision of Margin of Error as edited by TK(talk | contribs) at 00:51, August 23, 2010. This URL is a permanent link to this version of this page.
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A margin of error is the percentage by which any estimate, such as a poll, is likely to be off. The most common is +/-3%. In most polls, the sample size of the poll is the largest contributing factor to the margin of error.