Data Includes Completed or Deleted Students

Community Explorer

I am just exploring Admin Analytics today for the first time. One thing that I am noticing is in the Average Course Score data, students that have completed the course (withdrawn) are still showing up on that report. They have a 0 grade since they are no longer enrolled in that course and their 0 grade is throwing off the average. I also saw in the Low Student Activity report students who have been deleted from the course (they dropped the course but stayed enrolled at the school) or who completed the course (withdrew from school) are still showing up. Is this the case for everyone? Is there a way to remove withdrawn students from these reports so the data is accurate for just enrolled students?