MIT 11 520 - Lecture Notes (14 pages)

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Lecture Notes



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Lecture Notes

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Pages:
14
School:
Massachusetts Institute of Technology
Course:
11 520 - A Workshop on Geographic Information Systems

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Massachusetts Institute of Technology Department of Urban Studies and Planning 11 520 A Workshop on Geographic Information Systems 11 188 Urban Planning and Social Science Laboratory Making Sense of the Census October 12 2005 Overview What is it and why do we care How the data are collected What data are available Introduction to Census geography and summary levels A Quick Look at the Census documentation A Quick Look at some sample data What Is It and Why Do We Care Mandated by the Constitution of the United States The modern census of population and housing was established in 1940 with the incorporation of the housing component and the introduction of sampling techniques for the long form Conducted every ten years Attempts an actual count of population categorized by various criteria The only source for demographic data with a wide geographic scope The most reliable and detailed information for describing local areas neighborhoods cities counties The most consistent source of time series demographic data available U S Congressional representatives are apportioned based on census counts Federal dollars for schools employment services highway assistance housing construction hospital services programs for the elderly etc are all distributed based on census figures How the Data Are Collected Collected from households through a mail survey conducted every decade For the 2000 Census more than 285 000 census takers and support personnel accounted for the 118 million households and 275 million persons in the United States o 2000 Census Home Page Two different census questionnaires are distributed o short form questionnaire contains questions asked of everyone summarized in Summary Tape File 1 STF 1 for 1980 and 1990 Summary File SF 1 for 2000 o long form questionnaire contains questions asked of a population sample 1 6 households summarized in Summary Tape File 3 STF 3 for 1980 and 1990 Summary File 3 SF 3 for 2000 The long form is being replaced in the 2010 Census by the



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