Glossary
Wilson interval
A Wilson interval is a range around a percentage that shows how far it could really lie from the true value, given how few answers it is based on.
If 3 of 10 answers name you, 30% sounds precise, but with 10 answers it could easily be 15% or 50% on another day. The interval makes that visible. With more answers it narrows.
The Wilson method is well suited to small samples and to percentages near 0 or 100, where simpler formulas misbehave.
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