Lab 9 (OPTIONAL) - power tutorial

You can start reading at page 5, and do exercises 9-12 but ONLY for the t-test (not the tests listed).

Next, read the section about power curves, then make a graph of power curves like the one in the tutorial, but with deltas varying from 0.1-0.9 by 0.1. Do exercise 13.

Work through the section on Cox regression and do exercise 14.

If you have time and interest, you can work through the section on Power Simulation. You can also do exercise 16 if you want.