STAB22H3 Lecture : STAB22-LEC09-(10,11).docx
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STAB22H3 Full Course Notes
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Chapter 10 (full); ended with the beginning of chapter 11. Covers up to what we get to on this thurs. lecture (check website for room assignments) For all the details: please check: http://www. utsc. utoronto. ca/~butler/b22/ There are questions on the old midterms about sample surveys and experimental design. This will not be on the mid-term. The reason these are here is b/c the old textbook covered them. Then, get a correlation for each of these subgroups, and compare it to the correlation retrieved from all the cars (no exclusions when it comes to mpg) => we are dividing the whole data into 2 groups, and finding a sep. line for each one. Recall: a correlation that is more closer to -1. 0 is more better. => the correlation of the entire data set was better than that retrieved from restricting data. Stat > summary stats > correlation > (mpg, weight (select columns of the 2 var"s you want to get correlation for), then:
