Exam 2: CCJ 6077 Spring 2002

Instructions: Complete both part I (multiple choice) and part II (applied) of the exam in the allotted time limit of 1hr and 45 minutes (7:00-8:45).

Use the scantrons provided to mark your answers for questions 1-35. You can use both texts, ArcGIS and Mapping Crime: Principles and Practice, to help you with the exam.

Part I

1. ______areas were essentially impossible to geocode because their rural route and P.O. box address inhibited the construction of links to the locations of housing units or businesses.

a. rural b. urban c. suburban d. all of the above

2. The uses of GIS in policing can be characterized as descriptive, analytical, and ______.

a. accurate b. interactive c. vague d. illogical

3. Crime mapping is typically based on ______and ______, with a weak or nonexistent theoretical foundation.

a. empirical and theoretical perspectives b. concepts and ideas c. experience and observation d. none of the above

4. A relatively recent trend in crime analysis emerging from the community policing movement has been the increasing tendency to see crime ______.

a. as a self-contained phenomenon b. in context c. as patterns d. none of the above 5. In the autodialer system employed by the Baltimore County PD, analysts subjectively identify clusters of incidents that have similar modus operandi and ______.

a. occur relatively close to one another b. occur far away from one another c. coincide with one another d. all of the above

6. Crime mapping can aid probation service areas in caseload distribution. a. True b. False

7. ______is the process that originated with the NYPD, in which precinct commanders are quizzed regularly about crime patterns in their areas.

a. GIS b. MapInfo c. ComStat d. Redistricter

8. In respect to crime analysis and the census, what is the advantage of using the mean instead of the median income?

a. The mean may be pulled to the left by high values of extremely rich. b. The mean has the advantage of being able to be manipulated mathematically. c. None of the above. d. All of the above.

9. For skewed distributions, which type of income is usually preferred?

a. mean b. median c. both are equally preferred d. neither of the two

10. What is the function of spatial joins?

a. To obtain a better understanding of census geography and analysis. b. To integrate mapping applications vertically. c. To link databases according to their geography. d. None of the above. Part 2

Instructions:

Download all files in the Exam 2 folder. You can access the directory by using either ccj6077 login or your own personal login (will be explained in-class). The direct path for the files is C:\ftp\ccj6077\exam2.

1. Create a new project and name it ‘Exam 2’. Add all the shape files that you have downloaded.

2. Rename the following layers:

a. STR12097 – Streets b. TR_12097 – Tracts c. Lnd12097 – Water d. CTY12097 – County e. BG_12097 – Block Groups

3. Change Auto Burglaries symbol to ‘Burglary, Vehicular’ with a size equal to 6. Change the symbol color to ‘Mars Red’. a. Then, using the symbol selector, choose properties and turn off the symbol background color under the layers option. Make sure the symbol for Auto Burglaries is ‘Mars Red’, 6pt. Font, and has no background color.

4. Change the Streets label style to ‘Street’. Change the font size to 8.

5. Change the Street symbol to ‘Residential Street’.

6. Change the Water layer symbol to ‘Lake’.

7. Change the Tracts layer symbol to ‘Arctic White’ with an outline width equal to ‘1’. Change the outline color to ‘Big Sky Blue’.

8. Change the County symbol fill color to ‘Topaz Sand’ and change the outline color to ‘Mars Red’. Change the outline width to ‘1’.

9. Change the Block Group symbol to ‘Crime Reporting Sector’. Change the outline width to ‘1’.

10. Create a graduated color map that depicts the number of Auto Burglaries by Block Group. Use the following settings: For the polygon summary of attributes, use ‘sum’.

11. Rename the new layer (Join_Output) to ‘Auto Burglaries by Block Group’. 12. Change the color ramp to ‘Crime Density’ using 7 classes.

13. Label the graduated color map. Change the label field to ‘ID’ and change the symbol to ‘Beat Label’. Change the size to 12 and the color to ‘Big Sky Blue’.

14. Insert the following text in the lower left portion of the map frame.

a. ‘Auto Burglary by Block Group’. Make sure the font size is 14 and the bold option is selected.

15. Perform a screen grab (PrintScrn) of your project displaying the following information: a. The visible features should be i. Graduated color map of Auto Burglaries by Block Group with Block Group labels and the Auto Burglary events features along with the text (Auto Burglary by Block Group).

16. Save your screen grab as ‘Map1.bmp’ and upload your file to your respective folder.

a. **VERY IMPORTANT: Make sure when you do save as that your save as type is 24-bit Bitmap(*.bmp,*dib)**

17. Create ‘Map2’ that displays the following features:

a. County Boundary b. Streets c. Water d. Census Tract

18. Change the County symbol fill color to ‘None’. Change the outline color to ‘Mars Red’ with an outline width of ‘2’.

19. Perform a screen grab (PrintScrn) of your project and save it as ‘Map2.bmp’

a. **VERY IMPORTANT: Make sure when you do save as that your save as type is 24-bit Bitmap(*.bmp,*dib)**