PSYCH 100A Lecture 3: Psych100A-2-1
Course CodePSYCH 100A
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Tuesday, January 14, 2020
-Fatigue in Cancer Survivors!
•Independent variable and dependent variable !
-Change in fatigue: outcome!
-yoga/education intervention: treatment!
•Random assignment, but not a random sample!
-Is sample representative for the population — external validity!
-P value: the outcome due to the random chance!
-d: standard deviation!
-Sample v.s. Population!
-Distribution of scores in the population!
-Distribution of scores in the sample (inference) !
-Distribution of sample statistics over repeated experiments (sampling variability)!
•Sample distribution is not population!
•As N increases, Statistics —> parameters!
•Data Generating Process in the Population!
•Data generating process <— causes of all the variation <— statistics to reveal!
•DGP is unknown to us!
•Data —> DGP: bottom-up strategy (from concrete to abstract)!
•DGP —> Data: top-down strategy (How probable is your data given your hypo!
-The sample result may or may not reﬂect something!
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