Calculating accuracy over time

JRy

New member
Joined
Jul 5, 2009
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I need to define a numerical score based on accuracy over time.

For example, let's say there are 1000 outcomes to a situation, and we have two people guessing the outcome.

Person 1 only guesses 500 times but they're right 55% of the time.
Person 2 guesses all 1000 times and they're right 52% of the time.

I need to give a higher score to person 2 because they participated more -- even though there accuracy was lower -- it held up more over time than Person 1. Does that make sense?

How can I calculate this and give some sort of numerical score? The score can be anything as long as it's relative to the total number of times they participated.
 
Are you willing to penalize wrong guess (=-1) compared to not guessing (=0)- like they do in SAT etc.
 
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