University Crime: FBI Report Do larger universities tend

Chapter , Problem 16

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University Crime: FBI Report Do larger universities tend to have more property crime? University crime statistics are affected by a variety of factors. The surrounding community, accessibility given to outside visitors, and many other factors influence crime rate. Let x be a variable that represents student enrollment (in thousands) on a university campus, and let y be a variable that represents the number of burglaries in a year on the university campus. A random sample of n 8 universities in California gave the following information about enrollments and annual burglary incidents. (Reference: Crime in the United States, Federal Bureau of Investigation.) x 12.5 30.0 24.5 14.3 7.5 27.7 16.2 20.1 y 26 73 39 23 15 30 15 25 (a) Make a scatter diagram and draw the line you think best fits the data. (b) Would you say the correlation is low, moderate, or high? positive or negative? (c) Using a calculator, verify that 10,030, and Compute r. As x increases, does the value of r imply that y should tend to increase or decrease? Explain