I believe Barcotta may be right and I have been using to many books, I have started just using the idiots guide to statistics although I did read through statistics demystified completely as well, part of my confusion seems to be that different books use different methods. I started using just the one book late last week. I need to practice with my calculator more as well. I have been doing standard deviations by hand although I have been doing permutations and combinations on the calculator.

__________________
Judy -
AS - Computer Science - Andover college
BS - Mgmt Information Systems -June 08
MS - Info Systems Mgmt - Start Aug 08 - UMBC