Cameroon - Enterprise Survey (2006)
ID de référence | CMR-2006-ES-v01-M-WB |
Année | 2006 |
Pays | Cameroon |
Producteur(s) | World Bank |
Bailleur(s) | World Bank - - |
Métadonnées | Documentation au format PDF |
Créé le
Aug 02, 2015
Dernière modification
Sep 01, 2015
Affichage par page
717397
Echantillonnage
Méthode d'échantillonnage
The sample for countries participating in the Enterprise Surveys is stratified by industry, firm size, and geographic region.
For stratification by industry, the main manufacturing sectors in each country in terms of value added, number of firms, and contribution to employment are selected. The retail trade sector is also included in all countries as a representative of the services sector, and depending on the size of the economy, the information technology (IT) sector is included. The rest of the universe is included in a residual stratum. In Cameroon, Manufacturing sector included 119 firms and Services sector - 53 companies.
Size stratification is defined the following way: small establishments (5 to 19 employees), medium establishments (20 to 99 employees), and large establishments (more than 99 employees).
Regional stratification includes the main economic regions in each country. In Cameroon, regional stratification was defined by three regions: Bafoussam, Douala and Yaounde.
Through this methodology, estimates for the different stratification levels can be calculated on a separate basis while at the same time inferences can be made for the economy as a whole, weighting individual observations by corresponding sample weights. Sample sizes for each stratification level are defined ensuring a minimum precision level of 7.5% with 95% confidence intervals for estimates with population proportions.
For more technical details on the sampling strategy, please review "Sampling Methodology" in "Technical Documents" folder.