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Factors that Affect Statistical Power
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Factors that Affect Statistical Power Number of tails in the statistical test One tailed tests have greater power than two tailed tests of significance Probability of making a Type I error (significance)
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Factors that Affect Statistical Power
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Factors that Affect Statistical Power • Number of tails in the statistical testOne tailed tests have greater power than two tailed tests of significance • Probability of making a Type I error (significance) • The greater the probability of making a Type I error, the greater the power of the statistical test • Sample size The greater the sample size, the greater the power of the statistical test • Effect Size • The greater the effect size, the greater the power of the statistical test
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