Last modified: 2013-03-22 21:44:00 UTC
At <http://reportcard.wmflabs.org/> currently, there's no explanation of where the data from the graphs comes from. As I understand it, most of the data comes from stats.wikimedia.org while one of the graph's data comes from comScore. Ideally there would be a citation next to each graph explaining the data source. Alternately, you could add a footnote explaining that all graphs use stats.wikimedia.org as a data source unless otherwise specified. I'm unclear whether stats.wikimedia.org has any pages on it explaining its methodology for gathering these statistics, but if so, that might be nice to link to as well.
We made two improvements to address this issue: 1) Charts now contain notes that can link to explanations / datasets. 2) Each chart contains a link to the raw dataset.