Power on X is a Mac OS X native (cocoa) application for the calculation of statistical power. The application can perform calculations of required sample size to achieve a desired power, and calculations of power for previously run studies/experiments. In
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Support for Power on X is available from the developer or publisher site.
View polyhedra. Hundreds provided (Platonic, Archimedean, Kepler-Poinsot & all other uniform polyhedra, Johnson Solids, Stewart toroids, compounds, geodesics etc). Rotate..
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If you experience problems getting this program read the 
View polyhedra. Hundreds provided (Platonic, Archimedean, Kepler-Poinsot & all other uniform polyhedra, Johnson Solids, Stewart toroids, compounds, geodesics etc). Rotate..
