BIOL 210 Lecture Notes - Lecture 17: Random Assignment, Statistical Significance, Yeti
25 Jan 2018
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Scientific theories: citation frequency curves: what happens to the median paper in science. The discoverers of hiv - not cited at very high frequencies. Confounding variable: cannot be controlled, but eliminated after the study during the analysis. Extraneous variables: we are not interested in, but can be controlled before the study. False positive: p-value, or type-a/1 error: how likely are we to have a false positive, want the probability of having this to be as small as possible. Paper next week: stating that most scientific studies are false (not intentionally, but because of false negatives/positives) Quasi-experimental - wouldn"t randomly assign to 2 groups. Repeated measures - would make everyone do both, with different orders. Can then do a genetic sample: they are being taken seriously - but the graphs discourage the existence of the yeti, the most convincing ones: From india - some of the hairs are from the extinct ursus maritimus tyrannus.
