STAB22H3 Lecture : STAB22-LEC08-(8,9).docx

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STAB22H3 Full Course Notes
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Lec08 (he covered c8, c9, but has not finished with c9 yet; i do not use chapter headings for this note because he kind of mixed up the two chapters in his presentation of lecture slides) Expectation: heavier cars should have lower, or worser mpg, b/c they use up more gas to drive in a given mile than does a lighter car. First of all, association is -ve, showing a downward trend. Just by looking at original scatterplot, it looks like it is straight. This is backed up by the correlation of -0. 903. Results overall seem to show that results are good fitting for a straight line. One example would be r^2, which came out as a high of about 82% (r^2. Is it majorly b/c of the x-var that the y-var varies (this would correspond to a high r^2), or.

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