Could someone please give me some guidance on how to adjust my scale to get a certain percentage. Here is my scale right now:
I want a grade of √- to give me 50%. However, it reports 44%. The other grades appear as follows:
√ - 67% (I want 70%)
√+ -89% ( I want a 90%)
√++ -100% (This is the only grade that show up how I want 100%)
I have tried all sort of combinations, but this is the closest I can get to the grades I want. Does anyone have any suggestions?