Unformatted text preview: and you can access these ﬁelds using the $ character, for example cars$speed . (a) Plot car stopping distance as a function of car speed (that is, stopping distance on the y-axis, speed on the x-axis). (b) In R , ﬁt a linear model y = a + bx where y is stopping distance and x is travelling speed. (c) Plot your ﬁtted line superimposed on the scatter plot from the previous part. Save the plot as a .pdf ﬁle, and submit it with your homework. (d) Do you think the linear model is a good ﬁt? Discuss why or why not. If not, what other models do you think might ﬁt better? 1...
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- Summer '10
- Math, Scatter plot, Farmer Jane, theoretical modeling exercise