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View Poll Results: do you think that only people with scores 240+ post their scores on the forums?
yes 15
no 6
Voters: 21. You have to register to vote in this poll.

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  #1  
Old 01-25-2014
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Default the"high score bias"

hi,
after reading this forums for a while i've seen that many of the people who post their scores usually have very amazing scores. this does not follow normal data distribution so i just wanted to hear everyonws opinion on this.
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  #2  
Old 01-25-2014
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Yes i dont think its any coincidence that most people that take the time to write a long "my experience" post have high scores.

I cant imagine that people with lower scores are going to be as motivated to write a post so everyone can congratulate them on doing so averagely well

(No harm at all meant to the "my experience" posters, I definitely found these useful when I was coming up with a study plan)
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  #3  
Old 01-25-2014
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Well first of all the mean is 227 and std Dev is 22 so 240 is barely half a std Dev above not that super high

Secomdly step 1 is not normal distribution it is negative skew with tail to the left so there are more scores around 240 than there are around 214
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  #4  
Old 01-25-2014
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Quote:
Originally Posted by jadej_a View Post
Well first of all the mean is 227 and std Dev is 22 so 240 is barely half a std Dev above not that super high

Secomdly step 1 is not normal distribution it is negative skew with tail to the left so there are more scores around 240 than there are around 214
i dont want to be disrespectful but where did you get that info from?
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Old 01-25-2014
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that mean and standard deviation is given on the current score report
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Old 01-25-2014
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Still doesnt change the the fact that there def is a bias of people reporting scores >240 than at the mean
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  #7  
Old 01-25-2014
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http://www.usmle-forums.com/attachme...raphcurves.jpg

Dunno where these stats came from, but its interesting anyway. Probably outdated given the mean from the red curve though
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  #8  
Old 01-25-2014
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It says that the blue line represents the people who posted on the EST. What's the EST? A forum?
If that is the case it would show the negative skew only for people who post (not all test takers) which is basically what orthoguy asks.

On more thing: The question that would probably make more sense would be a poll where people can vote their scores anonymously, this could probably lead to a more realistic representation of the curve.
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  #9  
Old 01-25-2014
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Quote:
Originally Posted by PneuX View Post
It says that the blue line represents the people who posted on the EST. What's the EST? A forum?
If that is the case it would show the negative skew only for people who post (not all test takers) which is basically what orthoguy asks.

On more thing: The question that would probably make more sense would be a poll where people can vote their scores anonymously, this could probably lead to a more realistic representation of the curve.
i agree with You Pneux but it will still have the problem that many people do not read the forum, others read it but dont post and others may choose to write something different than the truth.
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  #10  
Old 01-25-2014
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Quote:
Originally Posted by orthoguy View Post
i agree with You Pneux but it will still have the problem that many people do not read the forum, others read it but dont post and others may choose to write something different than the truth.
Yes, that's why I thought that one could get at least a somewhat represantation that is closer to reality by letting people submit their scores in an anonymous way.
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  #11  
Old 01-25-2014
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im new to posting and just today learned how to do it. but id be happy to contribute if someone creates the thread.
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  #12  
Old 01-26-2014
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I Mentioned this in an old thread i started, not feeling alone anymore!!!!
There are not only 240s stories.... There are 260s and once i saw 270 on a story!!! Thats why i started to doubt whether they were true without them posting their actual score report.
Anyways those posts make you think that this test is easy!!!
Very far from reality. High score bias is the answer.
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