Two Arm Binomial

Two Arm Binomial is a program to calculate either estimates of sample size or power for differences in proportions. The program allows for unequal sample size allocation between the two groups.

For further details, view the Help Document.

User Input

Program Output

Select Calculation, Test Type, and Continuity Correction

Sample Size
Power

1 Sided
2 Sided

No Correction
Continuity Correction

Select Hypothesis Test Parameters

Null Proportion

Alternative Proportion

Alpha

Sample Size Ratio 2-to-1

Sample Size

Power

Help Document