Test 1: median=82 very nice!
Recall that participation=5%, problem sets=30%, exams=50% and final research presentations=15% (must participate to pass). As per the syllabus:
Exams 50% To encourage exams as a learning experience a couple extra points will be granted for complete (and correct) test corrections. Turn in your original test too.

You can possibly add:           Maximum of {+3 or +15% points you missed}
to your test grade if you replace all of your incorrect responses with correct answers.
I want you to understand the material and I am happy to help in office hours or online.