Thread: MBE percentile and grading for raw score or scaled score + essay grading for AZ

Does anyone have a MBE percentile chart for both the raw score or the scaled score? I read that a letter from AZ gave a range of the AZ takers 94 - 185. The reported AZ average was 145.2. I know that the July MBE typically is 143 average. If someone can provide a formula or a chart, it will be very highly appreciated. Also, does anyone know how the "essay scaling" process works for AZ

a good tool

Salmon Chase, author of the blog "Sometimes you eat the bar" introduced this tool: http://bayes.bgsu.edu/nsf_web/jscrip...ormal_icdf.htm

and calculated the percentile (for raw score I believe)

* 141 = 95th percentile
* 140 = 94th percentile
* 131 = 86th percentile
* 130 = 85th percentile
* 129 = 84th percentile
* 108 = 47th percentile