comlex raw score to percentile

[Victor Bouton]

I need a source that provides a tranlation of the raw comlex score to a percentile.

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[wook]

I need a source that provides a tranlation of the raw comlex score to a percentile.

Standard scores (3-digit). The mean 3-digit standard scores of all three written examinations are 500, regardless of when the examinations are given. The minimal passing 3-digit standard score for Level 1 and Level 2 (CE) is 400, for Level 3 is 350, regardless of when the examinations are taken.

Standard deviations of COMLEX written examination 3-digit scores are Level-specific and time-specific. For Level 1 examinations given between 1998 and 2001, the standard deviation is 71; from 2002 to October 2005, the standard deviation is 79; From May 2006 to present, the standard deviation is 79. For Level 2 written examinations given between 1997 and 2000, the standard deviation is 85; from 2001 to June 2005, the standard deviation is 73; from July 2005 to present, the standard deviation is 83. For Level 3 examinations given between 1995 and 1999, the standard deviation is 111; from 2000 to June 2005, the standard deviation is 120; from September 2005 to present, the standard deviation is 123.

Standard scores (2-digit). The minimal passing 2-digit standard scores for all three written examinations are 75, regardless of when the examinations are taken.

Standard deviations of COMLEX written examinations 2-digit scores are Level-specific and time-specific. For Level 1 examinations given between 1998 and 2001, the standard deviation is 3.55; from 2002 to October 2005, the standard deviation is 3.95. For Level 2 written examinations given between 1997 and 2000, the standard deviation is 4.25; from 2001 to June 2005, the standard deviation is 3.65. For Level 3 examinations given between 1995 and 1999, the standard deviation is 3.70; from 2000 to June 2005, the standard deviation is 4.00.




Wook

 

[DOctorJay]

http://bayes.bgsu.edu/nsf_web/jscript/normal_cdf/normal_icdf.htm
http://stattrek.com/Tables/Normal.aspx

 

[lucy2]

http://bayes.bgsu.edu/nsf_web/jscript/normal_cdf/normal_icdf.htm

Go to the above website and type in 500 for mean; 79 for SD (for step III it's 123, but it works out to be the same anyway), then for probability just randomly try, like .50 (50th %) to see what the corresponding 3 digit score would be. So, if you put in .50 that = 3 digit score of 500. If your score is like 600, you'd have to put in .80 X 100 = 80th percentile = good on ya. Cheers, l2

 

[lucy2]

Sorry, I didn't realize 100 other people had already found this website and replied. l2

 

[novado]

Actually that makes a huge difference in using 79 vs 123. It inflates your percentile to use 79 vs 123. I would stick with the 123 as the SD. The COMLEX III has such a wide range for scores compared to the prior Steps 1 and 2. This is probably why so many residencies get confused with the scores. I got 100 points higher on Step III than Step II, but my percentile was almost the exact same. Strangely, my 2 digit score went down because the standard deviation for Step III is different for the 2 digit score also. So confusing....