Nigeria - General Household Survey 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 and 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. The questionnaires were processed at the zones. On completion, computer editing was also carried out to ensure the integrity of the data. It should be of note that the questionnaires were designed as scannables, therefore there were scanned using Teleform Reader and the Verifier for evaluation. Also, SPSS (a Statistical package) was used in the analysis and Table generation.