Phenomenology

The Oxford English Dictionary defines procrastination as the act of delaying something.  The English word derives from the Latin verb procastinare, from pro - 'forward + crastinus 'belonging to tomorrow'. Literally it means putting off until tomorrow.
Procrastination is a conscious act. Two ways to detect. Self report or Infer. 
Time required to complete an assignment (on average) Tr
Data Description
In order to estimate the impact of procrastination on performance we did an in depth study in the context of the learning system X [\cite{2017-09-09.a}].  X is an open learning environment for students and instructors in the higher education market. In this analysis, we examined data from about 105,000 students who submitted 2.5 million assignments, on the platform in Fall of 2016. These students were in over 2500 courses from various disciplines taught by around 2000 instructors at 900 different institutions across United States. We kept the analysis to US in order to not contaminate the analysis with regional issues and cultural biases of procrastination. The students submitted about 59k unique assignments.  For each of the courses in our analysis, at least 10 students were enrolled and at least 10 assignments were assigned in the class.
For each of the assignments, we have information about when the student started the homework, when the submitted it, and the due date. In our data 51% of the students submit the home work before the due date. 42.5% start and submit on due date. And the rest 6.5% submit it after the due date. 90% of assignments are started and ended on the same day. Figure 1 shows the counts in color for the number of assignments that are started and submitted relative to due date. Figure 2 shows that on an average students start and submit their assignments 2 days before they are due. And the median is 1 day before it is due. Figure 3 shows that most of our students score fairly well on the homeworks they submit. The mean is 90 and the median is 100.