CORNELL INFO 747 - Lecture Notes (31 pages)

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Lecture Notes



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Lecture Notes

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Lecture Notes


Pages:
31
School:
Cornell University
Course:
Info 747 - Social & Economic Data

Unformatted text preview:

Populations and Sampling Frames John M Abowd February 2005 John M Abowd 2005 all rights reserved Outline Basic definitions Demographic sampling frames Coverage and duplication Economic sampling frames Coverage and duplication Basic relations connecting frames John M Abowd 2005 all rights reserved Basic Definitions Target population Out of scope population Frame population Geography Population demographics Business entity demographics Government entities John M Abowd 2005 all rights reserved Target Population The target population is any entity satisfying the set of conditions that specify the universe Example 1 Human population All people male and female child and adult living in a given geographic area at a particular date Example 2 Establishment population A business or industrial unit at a single location that distributes goods or performs services on a particular date or during a given period John M Abowd 2005 all rights reserved Out of scope Population An entity that is outside either the geographic region under study or other specific restrictions imposed on the target population Example 1 When the in scope population is persons age 16 or over living in households persons age 15 or younger and all persons living in group quarters are out of scope Example 2 When the in scope population is employer establishments all establishments with zero employees are out of scope John M Abowd 2005 all rights reserved Frame Population Set of target population entities that can be selected into a sample or census Also called a sampling frame Simple cases single sampling frame is a list of all addresses to be sampled list of all people to be sampled list of all businesses to be sampled Complex sample designs use multiple frame populations to get better coverage of the target population Complex frame example SIPP John M Abowd 2005 all rights reserved Frame Population Example Complex frame example SIPP 1996 Multi stage sample Primary Sampling Units are geographic areas Within



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