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Psych Research Pt 7

Statistical Power

QuestionAnswer
Factors Determining Statistical Power CAVES: Correlation between IV levels Alpha Level Variability in the DV Effect Size Sample Size
Statistical Power the probability that a given experiment will find an effect of the IV on the DV given that an effect exists power + beta = 1
Why should an experiment have high statistical power? to prevent type II errors
Correlation Between IV Levels only affects power in w/in subject designs; higher correlation between the IV levels gives more power
Alpha Level larger alpha level gives more power
Variability in the DV lower variability gives more power
Effect Size the magnitude of the effect the IV has on the DV; larger effect size gives more power
Sample Size larger sample size gives more power
Created by: 2144066352316258
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