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ASC Stats Homepage: Power & G*Power

Importance of Power and Sample Size

Sample Size, Power, and Use of Z-Tables

Power and Sample Size

Since research is often constrained by resources, it is important to understand power and sample size when designing a study.  This Skill Builder will focus on how the margin of error, effect size, and variability of the outcome affect sample size computations.  Also, Type 1 and Type 2 errors and statistical power will be discussed. Session recorded on September 17, 2015