United States yearbook - 1982 (1)

Statistical Methodology and Reliability 923
DATA COLLECTION AND
IMPUTATION PROCEDURES
INFORMATION ON ERRORS IN THE DATA
Estimates of sampling
error
Other (nonsampling)
errors
SOURCES OF ADDITIONAL
MATERIAL
Five mail and telephone
followups for larger
nonrespondents. Data (or
small single-unit firms
(general!/ those with fewer
than 10 employees) not
mailed census questionnaires
are estimated from
administrative records of IRS
and SSA Data for
nonrespondents imputed from
related responses or
administrative records from
IRS and SSA. Approximately
3.7% of total value of
shipments was represented
by fully imputed records In
1077.
Not applicable.
Based on evaluation studies,
estimates of nonsampling
enors for 1972 were about
1.3% for estimated total
payroll; 2% for total
employment; and 1 % for
value of shipments. Estimates
for 1977 are not available.
U.5. Bureau of the Census,
C e n s u s o f M a n u fa c tu re s ,
1977, vol. 1, S u b je c t a n d
S p e c ia l S ta tis tic s .
Survey conducted by mall
with phone and mail followups
of nonrespondents.
Imputation (for all
nonresponse items) based on
previous year reports, or for
new establishments in survey,
on industry averages.
Estimated CV’s for number of
employees and for value
added totals given in annual
publications. For State totals,
most estimated CV’s are 2%
or less, but vary considerably
for detailed characteristics.
Response rate about 85%.
Nonsampling errors include
those due to collection,
reporting, and transcription
errors, many of which are
corrected through computer
and clerical checks.
U.S. Bureau of the Census,
A n n u a l S u rv e y o f
M a n u fa c tu re s , and Technical
Paper 24.
M a ll a n d te le p h o n e fo llo w u p s
for nonrespondents. Data for
nonreepondent8 and
"nonselected" firms in retail
trade and service industries
from administrative records of
IRS and the Social Security
Administration. Imputation
from related responses or
administrative records from
IRS or SSA
N o t a p p lic a b le .
R e s p o n s e ra te 85% fo r s in g le
establishment firms; 92% for
multi-establishment firms.
Item response ranged from
60% to 90% with higher rates
for less detailed questions.
US. B u re a u of the C e n s u s ,
Appendix A of C e n s u s o f
R e ta il T ra d e , vol. I; C e n s u s o f
S e rv ic e In d u s trie s , vol. I;
C e n s u s o f W h o le s a le T ra d e ,
vol. 1; and H is to ry o f th e 1 9 7 7
e c o n o m ic C e n s u s e s ,
December 19B0.
Survey questionnaire mailed
early In year and followed by
mall and phone followups.
Imputation based on previous
reports of the firm in current
monthly surveys or latest
census, supplemented by
a d m in is tra tiv e re c o rd s .
Data collected by mail with
telephone followup for
nonrespondents. Imputation
made for each nonresponse
Item and each item failing edit
ohecks.
CV’s for total retail and
wholesale estimates of sales
and Inventories are about 1 %.
For more detailed estimates
by kind of business, or
geographic areas, estimated
CV’s range from 0 to 8%.
CV’s about .8% for estimated
total retail sales, 2.4% for
wholesale sales, 2.0% for
wholesale inventories, and
1.5% for selected service
receipts. Sampling errors
shown in monthly
publications.
Imputation rates are about
5% to 7% for annual retail
sales and inventory and about
9% to 11% for annual
wholesale sales and
inventory.
imputation rates are about
10%-15% for monthly retail
sales, wholesale sales, and
selected services receipts
and about 20%-25% for
monthly, wholesale
inventories.
U.S. Bureau of the Census,
C u rre n t B u s in e s s R e p o rts,
1 9 8 0 R e ia U T ra d e and 198 0
W h o le s a le T rad e .
U.S. Bureau of the Census,
C u rre n t B u s in e s s R e p o rts,
M o n th ly R e ta il T rad e , M o n th ly
W h o le s a fe T rad e , and
M o n th ly S e le c te d S e n d e e s
R e c e ip ts .