KINE 2049 Lecture Notes - Lecture 12: Tylenol (Brand)
11 Dec 2017
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Threats to external validity: population and ecological setting. Italians eat lots of fat and have less heart attacks than americans. The post hoc error would be saying eat and drink what you want, its speaking. Reliability: refers to the consistency and repeatability of the data. Reliability: anytime you make a measurement there will always be some error, any measurement has 2 parts. Xt (true component) and xe (error component: so the formula is xo=xt+xe, xo is the observed score, xt id the true score, and xe is the measurement error. To deal with this error, you do test and retest: you then nd a correlation between the two tests, to see how reliable your results are. Experiments: small sample, big population, easiest way to do this is with 2 groups, 1 control and 1 experimental, referred to as an rct. November 1st: keep everything the same except for the intervention or treatment that is being administered.
