Understanding, Planning, and Executing The Complete Power Analysis
Friday, May 22, 2009,
9:00 AM - 12:50 PM
Yerba Buena 3 - 4
Power analyses are used to either determine how much power we have given our sample size (less common) or how many subjects we need to achieve a desired power level (more common). Every researcher should be familiar with power analyses, and yet few have ever received formal training on the comprehensive process. This workshop will walk attendees through an entire 12-step power analysis process, including detailing hypotheses and their order of importance, understanding how intelligent alpha control can save much money and time, understanding the benefit of repeated measures, knowing which statistical methods enhance power, as well as calculating power curves. All attendees should walk away with the tools they need to conduct a power analysis from start to finish, almost all of which can be conducted with tools they have available right now. Most of the 12-step process is conducted with simple Excel templates; actual power calculations will be shown with SPSS sample size module, Stata 10, and a brief discussion on Monte Carlo estimation is provided with Mplus. This workshop is targeted for most researchers with varied statistical knowledge.