I would have to say that the probability of this thread lasting is slim to none. :/
And you will attempt to prove me wrong. :3
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Anonymous2010-01-23 21:13
I'm interested in this too.
What's the probability of one passing a multiple choice exam with 100 questions, 4 options each, and a 50% pass mark? Putting down only random answers of course.
>>3
Reminds me of that pic of such a test where the person checked answer A for every question and the teacher gave him 0 instead of a figure around 50%.
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Anonymous2010-01-24 4:57
Thanks for proving me right. :3
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Anonymous2010-01-25 1:44
>>5
He picked C for every answer, not realizing that it was a true/false test.
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Anonymous2010-01-25 11:27
pick a random answer for each question you have 1/4 chance of getting it right, do this 100 times = 25%. It's actuially that simple
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Anonymous2010-01-26 3:35
Do they randomly scramble the answers? If it's all set up by hand it would probably be possible to uncover biases by analysing a large number of old tests.
An n-order Markov chain might be a good place to start.
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Anonymous2010-01-26 11:41
answers are written and if there is an excess of answers under one letter then the people who made the test switch it up a bit so it will always be roughly around 25% if you pick the same answer the whole way through
source is ma science teacher 3 years ago
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Anonymous2010-01-26 19:23
>>10
No computers? Ten one could probably get like 27% or something just by not answering the same twice in a row.
Humans are poor RNGs and tend to ruin true randomness by removing patterns that "don't look random enough."