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Power_and_Effect_size_Exercises

# Power_and_Effect_size_Exercises - March 8 2010 Power and...

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March 8, 2010 Power and Effect Size Objectives of the exercises: I To understand the logic of hypothesis testing and associated terminology II To understand the concept of Power (the probability of getting significant results if the research hypothesis is true) III To understand the concept of effect size and how it's calculated IV To understand the relationship between effect size and power Multiple Choice Questions 1. If you use the .01 significance level instead of the .05 significance level, you increase the chance of… a) incorrectly supporting the research hypothesis b) incorrectly rejecting the null hypothesis c) a Type II error d) a Type I error 2. Statistical power can be defined as 3. Researchers interested in making practical applications are most likely to want to minimize

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