Continuing Education Workshop on Power Analysis

American Fisheries Society, NC Chapter

February 6, 2002, 1pm – 4:30pm

McGuire Operations Center, Huntersville NC

Conducted by Don Holbert PhD, Professor of Biostatistics,

School of Allied Health Sciences, East Carolina University

Workshop Outline:

 

  1. What is Power Analysis, and why is it important to conduct a Power Analysis? (this will be discussed in the setting of the more commonly applied statistical procedures, including paired and independent samples t-tests, comparing 2 or more independent proportions, one-way ANOVA, and simple linear regression).

 

  1. What inputs do I need to conduct a Power Analysis at the planning stages of a study?

 

  1. What types of calculations are involved in calculating the power of a statistical test?

 

  1. What are the different ways of displaying answer(s) to the question “What power does the proposed study have?”

 

  1. What software is available to conduct Power Analysis calculations and display them in a

user-friendly way? (PASS, Statistica, Power and Precision)

 

  1. Some examples of where Power Analysis might be used in the setting of Fisheries/Field Biology.

 

7.   What are my analysis options when analyzing data from an under-powered study?