Context: I’m always told on big tests that if I run out of time I should bubble all A’s or something because it’s a better chance I get it right than if I sporadically bubble answers. Why isn’t it just a consistent 25% chance?
In: 0
Statistically, it’s a 25% chance outright that you’ll get the answer right by putting the same answer over and over. Whether the test is 10 questions or 200 questions, your chances are 25% overall each time. Random answers are 25% per question. So if the test is 10 questions, that 25% chance becomes 2.5% chance you’ll get the answer right overall. However the law of average dictates that they both will produce a very similar chance at a correct answer.
On the other hand. Statistically, you’re going to fail using either of these methods lol.
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