Understanding Grade Curving to Interpreting Your Exam Results

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Discussion Overview

The discussion revolves around the concept of grade curving in the context of exam results, specifically how raw scores will be adjusted to achieve a desired average. Participants explore different methods of curving and the implications for individual scores.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant seeks clarification on the meaning of the TA's email regarding uncurved and curved grades.
  • Another participant suggests that a Gaussian distribution might be used for the curve, implying that all scores will be adjusted by a fixed amount to reach an average of 80/120.
  • A different participant acknowledges that while adding a fixed number of points is a common method, there are alternative curving methods and advises checking with the TA for specifics.
  • One participant estimates how the curve might affect different scores, suggesting that those scoring lower will see a more significant increase, while higher scores will see diminishing returns from the curve.
  • The same participant provides a rough breakdown of expected grades post-curve based on raw scores, indicating that those scoring below 70/120 may still receive low grades even after curving.

Areas of Agreement / Disagreement

Participants express various hypotheses about the curving process, with no consensus on the exact method or outcomes. There are differing views on how scores will be adjusted and the impact of the curve on final grades.

Contextual Notes

Participants acknowledge uncertainty regarding the specific curving method and its application, with some assumptions about score distributions and outcomes remaining unresolved.

JG89
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I recently had a midterm that was out of 120. My TA just sent an email to everyone saying "The exam grades currently going up are your UNCURVED marks. They will be curved up to 80/120 average, the average before the curve looks to be about 70/120 or a bit lower"

What exactly does this mean?
 
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probably a gaussian distribution, so they'll give everyone + X amount of points so that the mean score is 80/120.
 
Yes, the simplest way is to add a fixed number of points to everybody's raw score, but there are other ways to do it. Ask your TA about the exact procedure if you want to be sure.
 
If you got a 70/120, you will have an 80/120. If you have a higher score it would probably be safe to assume your curve will diminish evenly until it is 0 at about 90% or about 107/120. If you got something like 95/120 maybe it will go up to 100. It's impossible to say exactly but you should be in the ball park if you estimate it like that. The curve isn't that big and the better you did the more negligible it will be. If you got upwards of a 90 you probably will end up with a low B. If you got upwards of and 80 you will probably get a very low to mid C. If you got a 70/120 you more or less bombed the test and will get a D+ even with the curve. Anything much below that is a low D or and F.
 

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