Exam 1 results

I normally do not give out letter grades on exams, only for semester grades, but if I did give letter grades, the average on Exam 1 would be about C-, a little low. (I usually like the average to be about a C.)

Here is the histogram:

There are a lot of C's, as usual, but too many F grades relative to A grades.

So I took a look at the amount of study time that the A students and the F students logged in Webcourses for the first week (last week) and for this week up to 10 AM Friday, just before the exam. Here are the relative proportions of study time.

Can you see a difference between A and F groups? What does that tell you about modifying your own study methods?