0The polls included in the sample were conducted between May 21 and June 3, all before Obama wrapped up the nomination Tuesday night. The poll of polls included recent surveys from CBS, Gallup, Pew and Newsweek. 02br 02br 00The poll of polls does not have a 01font01i00margin02i02font00 of sampling error.02br 02br 00So what is the meaning of 'margin' ? Is it limit, or tolerance.0-
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org/marginofsamplingerrormose
— Marius Hancu
org/marginofsamplingerrormose
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1font01i00margin02i02font00 of sampling error: the 01b00statistical error02b00 involved in that poll02br 00See: 02br 00<> What is the Margin of Sampling Error?02br 00<>0500230hrefhttp://www.aapor.org/marginofsamplingerrormose
0The margin tells you how much the results could be different from their estimate.02br 02br 00If I say 49% say yes, and 51% say no with a margin of error of 3%, it could be 52% say yes and 48% say no. 02br 02br 00On the other hand, if 55% of the people say A, and 45% say B, and the margin of error is 3%, you can be pretty confident it will be A - the diffe