Tag

margin of error

1 answered question tagged “margin of error”. Browse and search all answers, or ask your own.

Searches the margin of error answers on this page. Search all answers

Where does the 1/sqrt(n) margin of error come from?

The rule that a poll has a margin of error of about 1/sqrt(n) is a short derivation, not a guess. Here it is step by step.

Read the answer → September 21, 2026