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.

User Input
Program Output

Select Calculation and Test Type

Sample Size
1 Sided
2 Sided

Select Hypothesis Test Parameters

Control Group Proportion
Experimental Group Proportion
Sample Size Ratio 2-to-1

Sample Size