From ICT4D Wiki
http://a4ai.org/affordability-report-2013/
The Affordability Index is a composite index, comprised of both secondary and primary data. We combine secondary quantitative data on infrastructure, access and affordability collected from reliable sources, with primary data gathered via a multi-country survey.
Following the methodology established for the World Wide Web Foundation's Web Index, countries receive an overall 0 to 100 score for the Index, with higher scores indicating higher current levels of affordability combined with strong policy and regulatory environment against a set of best practices that Alliance members have identified as critical to open, fair and effective broadband markets.
- Developed by the Alliance for Affordable Internet (A4AI)