| Applet | Several for comparing two means and two proportions |
| Source | Sealed Envelope |
| Description | Calculates sample size for parallel-group equivalence and superiority trials, with continuous or binary outcome variables. |
| Link | http://www.sealedenvelope.com/power.php |
| X-Listing | |
| Keywords | Hypothesis testing, Sample size calculators |
| Visit Count | 1074 |
| Rating |  |