SciStat
SciStat
®
Guest
Sign in
Personal info
Account
Messages
Preferences
Menu
Home
Files
Data
Tools
Statistics
Sample size
Calculators
You are using a
Guest
account. Some functionality has been disabled.
Register
or
Sign in
.
Home
Sample size
Confidence interval of a difference between proportions
Sample size for Confidence interval of a difference between proportions
Confidence interval
Confidence Interval (%):
90%
95%
99%
Input
Proportion in group 1 (%):
Enter a value.
Proportion in group 2 (%):
Enter a value.
Confidence interval width (2-sided):
Enter a value.
Ratio of sample sizes in Group 1 / Group 2:
Enter a value.
Results
Number of cases required in group 1:
Number of cases required in group 2:
Total sample size (2 groups together):
Help
SciStat®
You are using a Guest account. Some functionality has been disabled. 
