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Compare · Sample Size Calculator
Two independent scenarios side by side.
Scenario A
Sample size
Confidence
90%
95%
98%
99%
Margin of error
%
Population size
Leave 0 for infinite
Expected proportion
%
Required n
383
Scenario B
Sample size
Confidence
90%
95%
98%
99%
Margin of error
%
Population size
Leave 0 for infinite
Expected proportion
%
Required n
383