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unit 6 additional questions

# unit 6 additional questions - Unit 6 Questions and Answers...

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Study guide for Unit 6: chance Precision/validity of an association Internal vs. external validity Generalizability Chance: population vs. samples Hypothesis testing ( p -values to reject or accept Ho) Estimation: Confidence intervals (95%, 99%) Computation and interpretation of a 95% confidence interval Statistical power: review of Type I and Type II errors Four features to power Example of a sample size and power calculation Overpowered samples: clinical vs. statistical significance
What are the 4 explanations for an association to be observed in a 1 – 2 – 3 – 4 -

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Define validity and name and define the 2 types of validity Validity: Two types of validity: 1 – 2 -
True or False? External validity must be sought first before internal validity T F

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Internal vs. external validity (fairness of comparison groups vs. fairness of {7418B5D8-F7CD-4DB4-8F48-EBEDBBBE0B09} Sample {6DEF339C-A13C-4696-9479-221032DF97DE} Target population {8BD9C68A-D06C-42CF-846B-52EE321CD8D6} State/country/world Extent to which the  cases/controls or  exposed/unexposed  come from the  same underlying  population and can  Extent to which the  cases/controls or  exposed/unexposed  represent all cases/ controls and all  exposed/unexposed
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