Massive Open Online Courses (MOOCs) have the potential to enable free university-level education on an enormous scale. A concern often raised about MOOCs is that although thousands enrol for courses, a very small proportion actually complete the course. The release of information about enrollment and completion rates from MOOCs appears to be ad hoc at the moment - that is, official statistics are not published for every course. This data visualisation draws together information about enrollment numbers and completion rates from across online news stories and blogs.
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