Question: The general practice in making pre-election polls is to use about 1000 responses. Statistics theory predicts that the standard deviation for N responses is the

The general practice in making pre-election polls is to use about 1000 responses. Statistics theory predicts that the standard deviation for N responses is the square root of N. What is the standard error for this number of responses? What is the relative uncertainty expressed as a percentage of the total responses? Why do pollsters use about 1000 responses

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