American Research Group, Inc.

Margin of Error Calculator

Enter a population size and a sample size to calculate the theoretical margin of error, plus or minus in percentage points, 95% of the time, on questions where opinion is evenly split.

Population size  
Sample size  
Margin of error

Other calculators:

Sample Size Calculator, Ballot Lead Calculator

Copyright © American Research Group, Inc. 2000-2017 All rights reserved.

ARG Home