Nigeria - Private farmer-Livestock-Poultry-2006, Third edition

The data editing is in 2 phases namely manual editing before the questionnaires were scanned. This involved using editors at the various zones to manually edit and ensure consistency in the information on the questionnaire. The second editing is the computer editing, this is the cleaning of the already scanned data.

DATA PROCESSING/ANALYSIS The data processing analysis involved six main stages: development of data entry program; training of data processing staff; manual editing and coding; data entry and scanning; computer editing, verification and conversion and table generation. Integrated Microcomputer Processing Systems (IMPS) was one of the specialized Statistical packages used to develop the data entry program. The Disk Operating System (DOS) version of the software can support multiple screens required to capture data from the various survey instruments. With the introduction of scannable questionnaires for General Household and Modern Agricultural Holding, another new software package called Teleform was used. The indicators on household surveys were obtained using the Statistical Package for Social Scientists (SPSS) while the indicators on establishment surveys were obtained using MS-ACCESS and MS-EXCEL. Others indicators on Prices, Trade, National Accounts and Agricultural Survey made use of MS-Office (Access and Excel). The tabulation and analysis of the three survey systems were implemented by diligent and capable staff of the collaborative agencies.