The scores that are in so far (more results to come as I get them):

DSST statistics= 51
Principles of Management= 68

I used the Idiots Guide for Statistics and InstantCert to study for the Stats. I found I could not answer the InstantCert's questions until I had worked through entire a to z concepts first in the book. I studied the standard deviations, definitely know how to do those if you plan to take the stats. I learned the parts that yielded the most points first that I could absorb the fastest. then I reinforced it with the Instantcert flashcards. I studied about 8 to 12 hours for the stats tests all together starting about two days before the test!!
I took at least three and a half hours to take the stats test. Almost walked after the first 6 questions. But don't panic. I sat there and worked out every problem that could be worked out and if I did not know the by the book stats formula to solve a problem, I used logic and other math methods to find the answers. Just try because you won't loose any points for filling in the wrong answer (guessing).

The principles of management was fairly easy. I just used the instantcert questions for it.