Summary of survey software:
Note: this description was prepared by the editor from information
at the Census
Bureau Web site for CENVAR.
U.S. Bureau of the Census (International Programs Center)
Types of designs that can be accommodated.
Sample designs ranging from simple random samples of elements to more
complex stratified, multistage cluster designs.
Types of estimands and statistical analyses that can be accomodated.
Totals, means, ratios, proportions for total population and domains;
output includes estimated value of the parameter, standard error,
coefficient of variation, 95% confidence interval, design effect
(DEFF), and number of observations upon which the estimate is based.
Restrictions on number of variables or observations.
Depends on practical limitations of the hardware in use.
General description of the "feel" of the software.
- CENVAR is menu-driven; analysis specifications may be saved and reused,
including domains, type of parameter, classification variables and
analysis variables. The data file must be described using the Data
Dictionary component of IMPS.
- Outputs are reported in tabular form, with user-controlled format, or
exported in spreadsheet format.
- CENVAR is a component of the general-purpose IMPS (see "Additional
Information" for CENVAR).
Platforms on which the software can be run.
- IBM PC or compatible microcomputer
- 640K bytes of memory
- 10M bytes of disk storage
- Printer capable of 132 characters per line
- DOS 3.2 or higher
- Math coprocessor recommended (CENVAR will run without it but much slower).
Availability, pricing and terms.
Free software, downloadable from Census Bureau
site. Manuals are also downloadable from this site.
- International Systems Team
- U.S. Bureau of the Census
- Washington, D.C. 20233-8860
- Telephone:1 (301) 457-1453
- Fax: 1 (301) 457-3033
- Telex: 627616165
- Internet: email@example.com
Read about CENVAR at http://www.census.gov/ipc/www/imps/cv.htm.
CENVAR is a component of IMPS (Integrated
Microcomputer Processing System), a system for the major tasks in
survey and census data processing: data entry, data editing,
tabulation, data dissemination, statistical analysis and data capture
control which can be used as a complete processing system or
stand-alone. IMPS is also available from the Census Bureau.
CENVAR is based on the PC CARP (Cluster
Analysis and Regression Package) software originally developed by Iowa
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