Ps Power And Sample Size Program. It goes hand-in-hand with sample size. Dec 06 2016 PS is a program for performing power and sample size calculations.
Free software is available. Basically every scientific discipline. A power analysis executed when the study is being planned.
RPM Power Analysis Software.
The demonstrations in this talk use the Power and Sample Size program. It goes hand-in-hand with sample size. It can be used for studies with dichotomous continuous or survival response measures. Its a handy tool meant for students and professionals with at least minimal statistical knowledge.