Exam+2+-Final-+Study+Guide

Exam+2+-Final-+Study+Guide - GEOGRAPHY 370 Fall 2011...

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GEOGRAPHY 370 – Fall 2011 – Section 007 Introduction to Geographic Information Phil Page Final Exam Study Guide NOTES FOR USING THIS STUDY GUIDE This list is not intended to be an exhaustive re-hashing of the lectures (that’s why you have your lecture notes and the lecture slides online), but instead a pointer to a lot of the important questions and topics. If you can provide relatively brief & to-the-point responses to the topics identified below, you are in great shape for the exam. However , please note that one of the biggest problems for those who had trouble with the mid-term exam was not fully answering the questions. Being concise is good, but you must be sure to completely answer the question. Note that a simple list of keywords is almost never a sufficient answer to any question . I have no desire to surprise or trick anybody with questions on the exam. This is an introductory class and I’m genuinely interested in making sure everybody “gets” the fundamentals of working with geographic data, so the exam questions are intended to be reasonably straightforward. A few of the questions included below will appear verbatim, or nearly so, on the exam. SECOND HALF OF THE SEMESTER Material covered in class on starting on Wednesday 10/5. Developing Geographic Data (continued) 1. What are TIGER/Line files? What is US Census demographic data? How are these two things related? a. Topologically Integrated Geographic Encoding and Referencing b. The US Census takes a lot of socioeconomic data when it counts the population; they divide the country into different census block, block groups, tracts, etc. based on geography. Then all of the census data is compiled into the Tiger/Line files. Census blocks, tracts, etc. as polygons. c. So the US Census demographic data is compiled and georeferenced in the TIGER/line files. d. TIGER is designed to support preparations for the census, support census taking efforts, evaluate the success of the census, provide the geographic framework for analysis of census data e. census data= attributes + census block=geographic location 2. What is address geocoding, and what does it accomplish/why is it useful? a. Address geocoding is attaching data with a street address to a geographic location using an interpolated estimation. In order for GIS data to be useful you need location+attribute. Address geocoding attaches household data (attribute) to a location, so it can be used in analysis. b. creates spatial data from non-spatial data! 3. Why would we say that address geocoding involves estimation ? a. When you look at the map you can find the street, and maybe even the block and determine which side of the street the address is located, so you can estimate where the actual address is located along the street, but because different lots may be different sizes you will have some error in your address location. For example, if your
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friend lives at 125 Main St., you can find Main Street, find the 100-200 street range,
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This note was uploaded on 02/19/2012 for the course GEOG 370 taught by Professor Staff during the Fall '08 term at UNC.

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Exam+2+-Final-+Study+Guide - GEOGRAPHY 370 Fall 2011...

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