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Margin of Error Calculator — Proportion or Mean with FPC

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Margin for Confidence level Sample size (n) Expected / observed proportion (%) Finite population size (0 = very large) If entered, it must be at least the sample size.

Calculated result

±3 percentage points

Standard error: 0.015307

Finite-population correction not applied

Confidence z-score: 1.96

Show the working

1. SE = √(0.5 × 0.5 ÷ 1067) = 0.015307.
2. MOE = 1.96 × 0.015307 × 1 = 3.0002 percentage points.

Sampling margin does not include nonresponse bias, coverage error, wording effects or other non-sampling error.

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