manual data processing of census data 2004 population and housing census statistics sierra leone...
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Manual Data Processing of Census Data
2004 Population and Housing Census
Statistics Sierra Leone
Thekeka Moses Conteh
Sierra Leone
Population Figures of Sierra Leone
Year Population 1963 2,180,355 1974 2,735,159 1985 3,515,821 2004 4,976,871
Administrative Division
Administrative Blocks Number Region/Province 4 District 14 Chiefdom 166 Sections 1,321 Enumeration Area 9,673 Localities 16,734
FINAL FIGURES OF 2004 CENSUS
Total Population 4,976,871 Males 2,420,218 Females 2,556,653 Household Population 4,930,532 Special Groups Population 46,339 Enumeration Area 9673 Total Number of Households 819,854 Average Household Size 6.0
Planning
Office and Equipment / Accessories Personnel Scheduling and timing Budgeting
Office Preparation / Installations
Server Room Data Entry and Verification Room Coding Room Store Room
Installation Power supply Air conditioners specifications Specifications for computers, printers, backup systems etc. LAN with star topology.
Recruitment and Training of Personnel
Data Processing Consultant 1 Census Database Manager 1 Census IT Manager 5 Coding Supervisors 4 Verifying Supervisors 12 Data Entry Supervisors
50 Coders 40 Verifiers 120 Data Entry Operators
Receiving and Batching
5 Coding Supervisors
To receive the questionnaires from logistics office on behalf
Census Data Processing Unit
To batch the census questionnaires in EA order in the store
for processing
Programming (a)
Main Application SOFTWARE The Integrated Microcomputer System (IMPS) developed by US Bureau of the census – is a
system for entry, editing, tabulation and management of census and survey data.
MODULES Data Dictionary (DATADICT)
Data Entry (CENTRY)Data Edit And Imputation (CONCOR)Publication Tabulation (CENTS)Quick Tabulation (QUICKTAB)Table Retrieval (IRS)Variance Calculation (CENVAR)Data Entry Control (CENTRACK)Utilities Quit
Programming (b)
IMPS– Design of data structures– Data Capture– Verification– Validation– Tabulation
Other SOFTWARE– SPSS WIN Version 12.0– MS ACCESS
Training
Coders Verifiers Data Entry Operators
Operations (a)
Coding
April May June July Aug Sep Oct Nov Dec Jan Feb
10% Sample10% Sample
The Rest The Rest
Re-batchingRe-batching
Operations (b)
Data Entry / Verification / Validation / Back up / Tabulations
10% Sample
The Rest
June July Aug Sep Oct Nov Dec
Primary Data Processing Flow
Main Data Entry
Structure Check
Verification Data Entry
Backup Raw Data
Secondary Editing
Backup Final Data
Secondary Data Processing Flow
Export Data from IMPS
Import Data into SPSS
Set up a Tabulation Plan
Run Tables with IMPS and SPSS
Creation of Census Databases
Population Housing Ownership Agriculture Deaths
DBMS MS-Access
Dissemination of Census Information
CDs Internet Monographs
Challenges with Manual Entry
Duplication of EA codes and household numbers
The use of F2 key in IMPS to force values that are out of range.
Transposition errors were prominent Incomplete entry of household records Incomplete entry of modules Data Verification was not effective.
Benefit of Manual Data Entry Approach
Build institutional capacity by the purchase of more microcomputers which can be used for other activities after the census.
Creates employment facility and training for more people. Data can be easily identified and keyed. Inconsistent data can be identify and resolved before
keying. Relatively less expensive Data was processed within reasonable period of eight
months.
Thank You