Source: Neatorama
In college, I never really had a strong drive to ace all my tests but I also didn’t want to fail. I just wanted to be in the “right” zone, not too high but not too low. You could say I wanted to be perfectly average. But there are just some exams that are either too difficult or too easy.
And researchers have shown that the optimal difficulty level would have the average score of a test-taker at around 85 percent.Wilson and his colleagues derive the number from experiments in machine learning. Under loose assumptions, they show that the optimal error rate for training a broad…
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