HAITI SURVEY SERVICES
Random Household Survey
Sociodig uses a sampling strategy typically based on 5 to 10 household clusters. We lay a grid over a Google Map image of the target region and then make a random, systematic selection of the desired number of clusters. Our experienced surveyors then visit the determined number of households closest to the selected GPS points and using Google Nexus tablets with built-in GPS chips, they apply the survey instrument and record the actual GPS points for validation.
Person on the Street
When appropriate, Sociodig maximizes the number of surveys while minimizing costs by doing surveys in popular markets and bus stations. Teams of surveyors are sent to a specific number of markets and/or bus stations where they randomize the selection of respondents by interviewing every nth person at specified intervals throughout the day and early evening. The same techniques are used for street and market vendor surveyors.