The report Older Driver Involvement in Injury Crashes in Texas (Texas Transportation Institute, 2004) included a scatterplot
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b. Using Table 5.5 and the ladder of transformations in Figure 5.38, suggest a transformation that might result in variables for which the scatterplot would exhibit a pattern that was more nearly linear.
c. Reexpress x and/or y using the transformation you recommended in Part (b). Construct a scatterplot of the transformed data.
d. Does the scatterplot in Part (c) suggest that the transformation was successful in straightening the plot?
e. Using the transformed variables, fit the least-squares line and use it to predict the fatality rate for 78-yearold drivers. 1.893
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Related Book For
Statistics The Exploration & Analysis Of Data
ISBN: 9780840058010
7th Edition
Authors: Roxy Peck, Jay L. Devore
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