Tipsters: Some time ago I recall reading something to the effect that our 90/80/70/60 ABCD grading scheme originated with Scottish instructors who brought it across the Atlantic in colonial times but I have not been able to verify this or locate where I saw that. Does anybody know? When you search online you get blogs like: http://arstechnica.com/civis/viewtopic.php?t=587049
I talk about the issue of putting letter grades on numeric scales in my measurement class after going over correction for guessing formulas, optimal difficulty schemes (e.g. 62% = optimal for 4 choice multiple choice, half way between chance and perfect) and so forth. I have tried over the years to do grades as T scores, Z scores, and other schemes but the 90/80/70 scheme seems so strongly engrained (here, at least) that I have given up and say "add 8 points" to your grade and make sure the final result is consist with my judgment. JK ========================== John W. Kulig, Ph.D. Professor of Psychology Coordinator, Psychology Honors Plymouth State University Plymouth NH 03264 ========================== --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=30293 or send a blank email to leave-30293-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
