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How is the CBT MCAT scored?

Discussion in 'MCAT Discussions' started by ramakul, Apr 8, 2007.

  1. ramakul

    ramakul Junior Member 10+ Year Member

    25
    0
    Apr 11, 2005
    SF
    How does a raw score get converted to a scaled score? How do they come up with percentile for CBT? I took the online 3R, and it seems like I need to get every question right to get 15. I remembered that we don't need to get every questions correct to get 15 when it was old paper exam.
     
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  3. dochoov

    dochoov Intercalating Death Disk 2+ Year Member

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    Jan 24, 2007
    That's a strange avatar, dude.

    And the scaled scores are just estimates, maybe a bit steep, who knows?
     
  4. dochoov

    dochoov Intercalating Death Disk 2+ Year Member

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    Jan 24, 2007
    And btw, that EK verbal question was pretty strange, too.
     
  5. killinsound

    killinsound Physician 10+ Year Member

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    Aug 30, 2006
    no one knows! hence: they don't release their scales.
     
  6. joebobfred46

    joebobfred46

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    Apr 9, 2007
    The reason that they don't release their scales is that, unlike the SAT or ACT, there is no constant correlation between your raw score and your scaled score. The AAMC scores each test on an individual basis, setting a 24 as the mean, with point difference correlating to roughly one standard error of measurement. It's a decently fair system, preventing a large discrepancy between tests simply because one was "easier" or harder. It's also the reason that the pre-CBT August MCAT was considered somewhat easier - since a large number of those taking the August MCAT were trying to raise low April scores while those who got higher scores abstained, the scale worked in their favor by a point or two.

    If you're interested in more detailed information about percentile scores and other scoring data for the MCAT, you'll probably find these two links somewhat helpful:

    http://www.aamc.org/students/mcat/examineedata/table0403.pdf

    http://www.aamc.org/students/mcat/sendscores/exofscores.pdf

    Hope this helps!
     
  7. ramakul

    ramakul Junior Member 10+ Year Member

    25
    0
    Apr 11, 2005
    SF
    So, basically, our raw scores will get scaled by comparing to other who take the test on the same day? Since there are 22 test dates, there will be 22 different scales that AAMC used to score us this year. Is this right?

    If this is the case, then it's better to take exam when there are more people taking it, so the statistic of percentile will bell-shape curve. right?

    Thanks
     
  8. estairella

    estairella Senior Member 10+ Year Member

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    May 7, 2006
    Given that each section is only scored out of 15, you'll be as bell-shaped as you need to be no matter when you take it.

    Even if it mattered, I'm not sure how a less-than-perfect curve is going to affect you. There are questions re-used in every administration where they compare past performance to current performance. Therefore, if everyone in your test group is really smart, then you could all potentially get 40s. You're not going to be penalized because there were more smart or dumb people in your group than normal.
     
  9. DREDAY

    DREDAY Senior Member 10+ Year Member

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    Jul 13, 2004
    I dont know what you are talking about dude. You need to just study instead of wasting time on sdn.
     

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