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    U.S. CENSUS GLOSSARY

 #  A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Table
1) A systematic arrangement of data presented in rows and/or columns with appropriate titles, captions, etc.; and
2) An arrangement of data items within a logical record in a summary tape file or other computerized medium, characterized by a common universe.

Tabulation
1) A table presenting statistics; and 2) the process of summarizing data.

Technical documentation
A publication or section of a publication or pdf file presenting detailed and complete information regarding a computer file or dataset. The text generally includes an abstract of the file, and overview of the statistical program of which the file is a part, a data dictionary that describes in detail the data that appear in the file, a glossary of concepts, and a questionnaire facsimile. Technical documentation for files based on sample data contain a source and reliability statement that includes a description of the sample design, the weighting procedures, and a presentation of sampling errors and/or a description of the ways to calculate them.

Tenure
Refers to the distinction between owner-occupied and renter-occupied housing units.

Related terms:
Housing unit, Owner-occupied housing unit, Renter-occupied housing unit

Thematic map
A map that reveals the geographic patterns in statistical data.



TIGER database
TIGER is an acronym for the Topologically Integrated Geographic Encoding and Referencing (System or database). It is a digital (computer-readable) geographic database that automates the mapping and related geographic activities required to support the U.S. Census Bureau's census and survey programs. The U.S. Census Bureau developed the TIGER System to automate the geographic support processes needed to meet the major geographic needs of the 1990 census: producing the cartographic products to support data collection and map presentations, providing the geographic structure for tabulation and dissemination of the collected statistical data, assigning residential and employer addresses to the correct geographic location and relating those locations to the geographic entities used for data tabulation, and so forth. The content of the TIGER database is undergoing continuous updates and is made available to the public through a variety of TIGER/Line files that may be obtained free of charge from the Internet or packaged on CD-ROM or DVD from Customer Services, U.S. Census Bureau, Washington, DC 20233-1900.

Title 13 (U.S. Code)
The law under which the Census Bureau operates and that guarantees the confidentiality of census information and establishes penalties for disclosing this information. It also provides the authorization for conducting the census in Puerto Rico and the Island Areas.

Related terms:
Confidentiality, Decennial census, Privacy Act

Town
A type of minor civil division in the New England states, New York, and Wisconsin and a type of incorporated place in 30 states and the Virgin Islands of the United States.

Related term:
County subdivision

Tract
See
Census tract.

Tract number
Used to uniquely identify a census tract within a county.

Traffic Analysis Zone (TAZ)
An area delineated by state and/or local transportation officials for tabulating traffic-related data - especially journey-to-work and place-of-work statistics. Usually consists of one or more census blocks, block groups, or census tracts.

Related term:
Journey to work

Tribal Block Group (BG)
A subdivision of a tribal census tract, a tribal block group is the smallest geographic unit for which the Census Bureau tabulates sample data. Tribal BGs are delineated by American Indian tribal participants or the Census Bureau, and average about 1,000 people. A tribal BG consists of all the census blocks within a tribal census tract with the same beginning number.

Example: Tribal BG 3 within a tribal census tract consists of all blocks numbered from 3000 to 3999.

In situations where an American Indian reservation or trust land crosses county or state lines, the same tribal BG number (within a tribal census tract) may be assigned on both sides of the county/state line.

Tribal Census Tract
A small, relatively permanent statistical subdivision of a federally recognized American Indian reservation and/or off-reservation trust land, delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting data. Designed to be relatively homogeneous units with respect to population characteristics, economic status, and living conditions, tribal census tracts average about 2,500 people.

A tribal census tract must consist of territory located on a reservation/trust land. The boundaries of tribal census tracts may cross state and/or county lines, and normally follow visible features, but may follow governmental unit boundaries and other nonvisible features in some instances. The Census Bureau has reserved the numbers 9400 to 9499 for tribal census tracts delineated on reservations/trust lands that are located in more than one county, but tracts numbered in the 9400 range do not necessarily cross county lines.

Tribal Designated Statistical Area (TDSA)
A statistical entity identified and delineated for the Census Bureau by a federally recognized American Indian tribe that does not currently have a legally established land base. A TDSA encompasses a compact and contiguous area that contains a concentration of individuals who identify with a federally recognized American Indian tribe and which there is structured or organized tribal activity.

Tribal Group
Refers to the combining of individual American Indian tribes, such as Alamo Navajo, Tohajiileehee Navajo and Ramah Navajo into the general Navajo tribe, or the combining of individual Alaska Native tribes such as American Eskimo, Eskimo, and Greenland Eskimo into the general Eskimo tribe. There are also three other categories: American Indian tribes not specified, Alaska Native tribes not specified and AIAN tribes not specified.

Tribal Jurisdiction Statistical Area (TJSA)
A statistical area identified and delineated for the 1990 decennial census by American Indian tribal officials in Oklahoma. They encompass the area that includes the American Indian population over which the tribe has jurisdiction. TJSAs replaced the Historic Areas of Oklahoma recognized by the Census Bureau for the 1980 decennial census. Beginning with Census 2000 these areas are called Oklahoma Tribal Statistical Areas (OTSAs).

Tutorial
An on-line mini-course, part of the American FactFinder Help system, which demonstrates how to accomplish various important tasks using the FactFinder site.

Type of institution
Institutions are those facilities designed for group quarters living. Institutions may specialize in one specific type of service such as a prison, or may offer varied services such as Veteran's Administration hospitals.

Related terms:
Group quarters (GQ), Institutionalized population

Type of school
Schools are designated as public or private institutions and are separated by levels of education offered, including: college, pre-primary, elementary or high school.

Related term:
Educational attainment, School enrollment















http://www.allcountries.org/uscensus/ glossary_t.html

These tables are based on figures supplied by the United States Census Bureau, U.S. Department of Commerce, and they are subject to revision by the Census Bureau.

Copyright © 2006 Photius Coutsoukis and Information Technology Associates, all rights reserved.