In these short videos Dr Bassirou Chitou, M&E Expert and international instructor at the International Program for Development Evaluation Training (IPDET), illustrates different methodological aspects in evaluation, and specifically: "Purposeful versus probabilty sampling in evaluation", "Sampling in qualitative versus quantitative evaluations", "Sampling strategies for hard to reach polulations", "Tips for maximizing response rates".

The videos have been developed by the Office of Evaluation of FAO.