Overview

margin of error


'margin of error' can also refer to...

 

More Like This

Show all results sharing this subject:

  • Probability and Statistics

GO

Show Summary Details

Quick Reference

A ‘margin of error’ is often reported with opinion polls using a phrase such as ‘the proportion intending to vote for the Red party is 35%, with a margin of error of 3%.’ This actually means that on an average of 19 times out of 20, the sample proportion obtained will be within 3% of the true value of the population proportion; it is therefore defining a 95% confidence interval for the population proportion, with the margin of error amounting to half the width of that interval.

Subjects: Probability and Statistics.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.