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Midterm

PSYC 3370 Experimental Design and Analysis Midterm Review

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Department
Psychology
Course
PSYC 3370
Professor
Scott Colwell
Semester
Fall

Description
Experimental Midterm Review Lecture 2 Review of Hypothesis Testing and Experimental Designs Type 1 ErrorAlpha is the probability of making a Type 1 errorRejecting the null hypothesis when it is trueStating an effect exists when it actually doesnt exist Type 2 ErrorBeta is the probability of making a Type 2 errorFailing to reject the null hypothesis when it is actually falseStating an effect doesnt exist when it actually does exist Lecture 3 and 4 Power and Effect Size PowerThe power of the test is the probability of rejecting the null hypothesis when it is actually false o Since this is beta then power must be equal to 1The desired level of power is 80 where it is not underover poweredPower relationships o As the effect size increases power increases o As beta increases power decreases o As alpha increases power increases o As sample size increases power increases o Power1the chance to making of type 2 error Null HypothesisAlpha Alternative HypothesisBeta PowerNull hypothesisAlternative hypothesisPOWER Effect size
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