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Method of scoring a BG quiz

Posted By: Jason Lee
Date: Sunday, 30 September 2012, at 1:38 a.m.

In Response To: Method of scoring a BG quiz (Timothy Chow)

Say I'm a below-average participant. Once I recognize that I'm below average, I'm incentivized to skip problems that I sense are likely to be difficult, because I don't expect to be able to score better than zero. If weaker participants start dropping out, then the field will get stronger, and people who were average or even slightly above average will find themselves below average, and the effect could snowball. I think you'd want a scoring system to encourage participation, not discourage it.

Dang, I had this thought, but not articulated as clearly as this. I knew there was a hole. Now I need an elegant way to fix it.

Here's a fix. I don't know how good this is:

Original Score: Your Error - Average Error

Revised Score: max(0, Your Error - Average Error)

You score positive only if the error of the play you select is better, otherwise you score zero.

Now, unfortunately, this makes skipping a question bad, as you have no incentive to skip. So now instead of summing scores, I think I have to average.

JLee

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