Description of Power on X program at Mac Shareware: Power on X is a Mac OS X native (cocoa) program for the calculation of statistical power. The program can perform calculations of required sample size to achieve a desired power, and calculations of power for previously run studies/experiments.

Power on X is a Mac OS X native (cocoa) program for the calculation of statistical power. The program can perform calculations of required sample size to achieve a desired power, and calculations of power for previously run studies/experiments. In addition, the paid version can generate power/sample size tables.

Power on X is a free to try software. You can free download and try it for an evaluation period.