I'm sorry if either of these have been discussed before.

1) It seems to me that if you don't know the answer to a problem but are able to eliminate at least one of the 5 choices, then it would be better to guess instead of leaving it blank. That's because with each problem wrong you lose 1/4 a point and each problem right, you gain a point. Thus, on average, you would gain and lose one point every 5 problems if you just randomly guessed. So, if you can eliminate even one choice, the odds would be in your favor to guess. Does this sound correct?

2) Are there any lists/tables anywhere that show the average PGRE and GRE scores for the students who were accepted at various schools? I know they had this for the SATs back when applying to undergraduate schools.