I wish they would have thought to include ranges instead of saying high and low...

I got 183

So after doing a bit of math the midpoint is 172.5. (380 - 35 = 345| 345 / 2 = 172.5. To calculate I subtracted 35 from my score so, 183 - 35 = 148. then 172.5 - 148 = 24.5. So going off of that I fell short of the midpoint I will consider myself Type B.)
Any flaws with my process?