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Purpose of scaled score?
Hi, what is the purpose of converting a raw score into a scaled score? Thanks
- Spock (rhp)Lv 71 month ago
Having done so, I can confidently tell you that it is possible to write an exam on which no student receives a perfect score -- even one for 250 students. It is also possible to write an exam on which very few actually score 90 percent. scaling the scores [relative to the mean achieved] corrects for this. [Lecturers and professors have limited time to write and grade exams -- and almost no time to experiment in determining how hard is too hard.] -- by contrast, external exams run by major outfits [bar exam?] have the scaling part done in the selection of the questions, rather than after the fact. such an exam takes a lot longer to write, test and accept. -- grampa [luckily for you, I'm retired now]