The table shows a small data set that has a pattern somewhat like that in Figure 3.22
Question:
a. Construct a data file, with columns for education, crime rate, and a rural/urban label.
b. Construct a scatter plot between y = crime rate and x = education, labeling each point as rural or urban.
c. Find the overall correlation between crime rate and education for all eight data points. Interpret.
d. Find the correlation between crime rate and education for the (i) urban counties alone and (ii) rural counties alone. Why are these correlations so different from the correlation in part c?
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a In Minitab your columns should look similar to the following Education Crime Rate RuralUrban 70 ...View the full answer
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Related Book For 
Statistics The Art And Science Of Learning From Data
ISBN: 9780321755940
3rd Edition
Authors: Alan Agresti, Christine A. Franklin
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