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CHAPTER 13 NOTES.docx

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Department
Psychology
Course
PSYC 217
Professor
All Professors
Semester
Spring

Description
CHAPTER 13UNDERSTANDING RESEARCH RESULTS STATISTICAL INFERENCESamples and PopulationsInferential Statistics used to determine whether we can make statements that the results reflect what would happen if we were to conduct the experiment again and again with multiple samplesasking whether we can infer that the difference in the sample means reflect the true difference in population meansInferential Statisticsdifference in the sample means reflects any true difference in the population means plus any random errorallow researchers make inferences about the true difference in the population on the basis of the sample datagive the probability that the difference between means reflects random error rather than a real differenceNull and Research HypothesesNull Hypothesis population means are equalthe observed difference is due to random errorIV had NO effectH0 population mean of the nomodel group is equal to population mean of the model groupResearch Hyptoehsis population means are not equal IV DID have an effectH1 population mean of the nomodel group is not equal to the
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