by esledge Thu Jul 05, 2012 1:55 pm
Hi ayush0289,
We are aware that some problems in the test database show 0-0 difficulty. This does NOT affect the score, which is based on a "behind the scenes" set of parameters, which are all in place. The displayed difficulty range is for your own self-analysis.
Our exams will soon reference the 130-170 score range rather than the 200-800 score range. [Incidentally, this is concurrent with ETS making the same shift, going from its PowerPrep to PowerPrepII practice exams.] We will correct all 0-0 difficulty labels as we calibrate to the newer scale.
I hope that helps!