Quiz6Solutions1 - slope of the line means. st. dev. mean...

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Statistics and Probbility~(Math 80) Quiz #6 (Chapters 8) t h 5 ( lo- :: : ; : m m 1 25 30 35 40 45 . 50 a. Describe the association in context., , Miles 11000s) v& CQ&&OO/ fts Miles dn'm b. 'J * , 1. A taxi company monitoring the safety of its cabs kept track of the number of miles tires had been driven (in thousands) and the depth of the tread remaining (in mm). Their data are displayed in the scatterplot. =t__,&602)C~ 35.3)+./+.$ = -0.60h +~~~~~ +14*Q ; -0,b~k + 36.04 9 c. Explain what the
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Unformatted text preview: slope of the line means. st. dev. mean correlation d. Explain what the y-intercept of the line means. Th& 3 i d u - t 36mm when z = O , This -3 i n i k d tGa. .d WtCI am on a. b& n W tzte fi& h ~ n o t b m d f l v ~ d U Cz= 0 2 me%fe8 r ~ r ; l ~ d r i u ~ 2 0 ) . J ' e. What does a negative residual mean in this context? . b u . e p s i - - rhe. tread deph . 9 waa LOWW ehr~r? p ~LJ &w line fw a ~ m t M f i X J I~U ~ c m i l a d r i ~ e n ) J a d rn 15 I Miles 7.28 35.3 Tread Depth 5.1 14.8 -0.86...
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