Who Does What in a Massive Open Online Course? | Seaton et al. , Comm. of the ACM | Learning Analytics, Educational Data Mining, Adaptive Learning in Higher Education | Scoop.it

Massive Open Online Courses (MOOCs) collect valuable data on student learning behavior; essentially complete records of al student interactions in a self-contained learning environment, with the benefit of large sample sizes. […] 

• […] 76% of all participants were browsers who collectively accounted for only 8% of time spent in the course, whereas, the 7% certificate-earning participants averaged 100 hours each and collectively accounted for 60% of total time. 

• Students spent the most time per week interacting with lecture videos and homework, followed by discussion forums and online laboratories;

Via Peter B. Sloep