How to Calculate the Margin of Error - ThoughtCo
https://www.thoughtco.com/how-to-calculate-the-margin-of-error-3126408
WEBDec 27, 2018 · The formula we will use is: E = zα/2 / (2√ n) The Level of Confidence. The first piece of information we need to calculate the margin of error is to determine what level of confidence we desire. This number can be any percentage less than 100%, but the most common levels of confidence are 90%, 95%, and 99%.
DA: 78 PA: 81 MOZ Rank: 99