margin of error. bootstrapping the margin of error is half of the interval
Post on 29-Jan-2016
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Margin of error
Bootstrapping
• The margin of error is half of the interval.
Central Limit Theorem
Margin of error of the mean
• 95%
• Approximately
Margin of error of a proportion
The greatest margin of error occurs when
Margin of error of a proportion
Rule of thumb becomes
Margin of error of a proportion
It should only be applied when the probability is between 0.3 and 0.7
Margin of error for differences
• If the results are from the same survey or poll:
• Margin error of difference = 2 x Margin of error of the Poll
Margin of error for differences
• If the results are from two independent surveys or polls:
• Margin error of difference = 1.5 x Average of error of each Poll
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