January 25, 1999
SUPREME COURT DECISION ON CENSUS IS ISSUED TODAY
The Supreme Court today ruled 5-4 against the use of
statistical sampling for narrow purposes of reapportionment,
the distribution of seats in the U.S. House of
Representatives among the states. But the Court noted that
the Census Act as amended "now requires the Secretary to use
statistical sampling in assembling the myriad demographic
data that are collected in connection with the decennial
census." (p. 21)
The full text of the Court's ruling in Department of
Commerce v. House of Representatives can be found on the
World Wide Web at
http://supct.law.cornell.edu/supct/html/98-404.ZS.html
Further information and reactions will be released as they
become available with a full News Alert later today.
Census Bureau Releases Dress Rehearsal Results
Plan for Census without Sampling Sent to Congress
The Census Bureau released the first set of population
counts from its Census Dress Rehearsal conducted last year
in Sacramento, CA; Columbia, SC, and surrounding areas; and
the Menominee American Indian Reservation, WI. Following
the schedule required by law for the decennial census, the
Bureau published totals for each of the sites within nine
months of the dress rehearsal Census Day in late April.
More detailed population numbers and related socio-economic
information will be available later this year.
The population of Sacramento, where the Bureau executed its
original Census 2000 plan that includes sampling and
statistical methods, was 403,313. The Bureau also reported
that without the use of sampling methods, the count would
have been 349,197 (a difference of 54,116). The quality
check survey (called a post enumeration survey, or PES)
measured a net undercount of 6.3 percent, or 25,572 people,
which was corrected with scientific techniques to reach the
final count. Other uses of sampling and statistical
estimation added 28,544 (7.1 percent of the citys total
population) to the count, as well. The Bureaus 1998
funding bill included a provision sought by sampling
opponents that requires the agency to publish at least two
sets of census counts, produced with and without the use of
statistical methods.
The Bureau also implemented its original census plan in
Menominee County, WI, home to an American Indian reservation
of the same name. The site-level count was 4,738, 3.0
percent (or 143 people) more than the 4,595 people counted
without using statistical methods. The Bureau plans to
visit all unresponsive households on Indian reservations,
instead of conducting follow-up visits on a sample basis,
but it will conduct the quality check survey in these areas
in order to adjust for undercounts. According to the PES
conducted in 1990, that census missed more than 12 percent
of American Indians living on reservations.
In the Columbia, SC, area, the Bureau conducted the dress
rehearsal using only traditional census methods and reported
a population total of 662,140. The Bureau administered a
post-census survey to measure accuracy but has not yet
reported the results of that quality check.
More information about the dress rehearsal is available on
the Bureaus web site, at
http://www.census.gov/Press-Release/www/date.html.
"Traditional" census plan released: The Census Bureau has
sent to Congress a plan for the 2000 census that does not
include sampling and statistical methods to finish the count
of unresponsive households or to correct undercount and
overcounts measured by a post-census survey. The plan is
based on four broad strategies, three of which mirror the
strategies developed for the original census design that
includes some sampling: building partnerships, simplifying
the census process, and using state-of-the-art technology to
improve efficiency and accuracy. The fourth strategy
using "special techniques to improve coverage" replaces
"us[ing] statistical methods" in the original plan.
The Bureau has been preparing to implement two census plans
since the fall of 1998, when Congress tacked such a
requirement onto the agencys annual funding bill. In its
"traditional" census plan, the Bureau says that improvements
to the 1990 census design will "enhance the quality of
Census 2000". However, it also concludes that, "consistent
with the judgements of most other experts in this area, [a]
census using statistical methods would be more accurate
generally, succeed in reducing the differential undercount
of minorities and children, and be more cost-effective than
the alternative."
The traditional plan calls for expanded operations
associated with the direct counting effort, such as opening
more local census offices (520 v. 476 under the original
plan) and hiring more enumerators (not quantified in new
plan). More enumerators will be needed to follow-up with
all households, not just a sample, which do not respond by
mail. Enumerators also will visit all housing units
identified as vacant or nonexistent by the Postal Service,
instead of the sample follow-up originally planned. And
instead of a quality check survey to provide the basis for
correcting undercounts and overcounts using statistical
methods, the Bureau will employ "coverage improvement"
operations to try and increase accuracy. After the
follow-up phase is completed, census workers will
double-check housing units that were listed as vacant by
enumerators on a previous visit, but which did not have an
undeliverable postal address. They also will visit all
households for which a questionnaire returned by mail was
not filled out or was subsequently lost. The alternative
plan includes a post enumeration survey to measure the
accuracy of the counts, but those results will not be used
to correct the official figures.
The Bureau also has decided to accept census responses via
the Internet, regardless of the final census design. This
option will be available only for households receiving the
short form (respondents must provide an identification
number printed on the form they receive at home) and only in
English.
The Bureau noted that its "Census 2000 Operational Plan
Using Traditional Census-Taking Methods" may change as a
result of congressional funding decisions or evaluations of
last years dress rehearsal. The original Census 2000
plan, unveiled in February 1996, has also been modified over
time based on recommendations from the Bureaus advisory
committees and outside evaluators such as the Commerce
Departments Inspector General and National Academy of
Sciences panels.
Congressional field hearings continue: The House Committee
on Government Reform will hold a field hearing in Phoenix,
AZ, on January 29, to examine "community based approaches
for a better enumeration." A primary focus will be efforts
to improve the count of American Indians living on
reservations. According to the post-enumeration survey
conducted as part of the 1990 census, the undercount for
this population was over 12 percent. The hearing will be
held in the Phoenix City Council Chambers, 200 West
Jefferson St., starting at 2:00 p.m. The panels census
subcommittee held its first field hearing in Miami last
December. (The committee has not formally organized its
subcommittees for the 106th Congress.)
Congressional committee assignments: The House and Senate
continue to fill seats on committees and subcommittees that
oversee and fund the census. Because of space
considerations, we will provide that information in a
separate News Alert later this week.
Questions about the information contained in this News Alert
may be directed to TerriAnn Lowenthal at (202) 484-2270 or,
by e-mail at <terriann2k(a)aol.com>om>. Please direct all
requests to receive News Alerts, and all changes in
address/phone/fax/e-mail, to Census 2000 at
<Census2000(a)ccmc.org> or 202/326-8700. Please feel free to
circulate this information to colleagues and other
interested individuals.