@efle @WedgeDawg and anyone else interested
I added a calculator for converting new MCAT scores to old scores, so feel free to take a look. Some points:
1. I didn't bother with the histograms in comparing with the upper extremes. It's meaningless because we are suddenly jumping from 41 for 526/527 to 45 to 528. So what I did was setting 522 = 39 and moving incrementally from there. Let's not tear our hair apart by dissecting the upper 99th percentiles.
2. I didn't add the subsection conversions. There is no reason for it. First, there isn't a conversion for the psych/soc section. Second, the conversions are skewed to the ends. Third, all that matters for subsection scores is that you are above the critical values, which are found by dividing the median (50th percentile) by the number of sections. Here it's 500/4 or 125, so make sure your subsection scores are > 125. Anywhere less warrants a retake because your subsection score falls below <10th percentile.
3. I didn't use any statistical models for exact comparisons. It's just a method of procedural programming using conditional statements, since it's the fastest way to calculate conversions. Once more info is out, I can very easily change a couple of values to make it updated.
4. The calculator ensures the validity of
LizzyM scores by adding the 10*GPA term to the calculated old MCAT scores. Unless for some reason, the demand of shortcut formulas are necessary (which is taken care of anyways), the conventional score works effectively.
5. I rounded the new scores to the old scores based on the closest bins found in the tables. So it wasn't unnecessarily rounding down/rounding up.
Let me know if you run into any problems, questions, concerns etc. Hope you find this useful!