Preparatory Material

It's been a while since the Preparatory Material on Quantitative Methods and Statistics from IIMB was sitting in my Inbox. Last week I started reading it. The initial material was pretty easy based on general fundamentals of sets, statistics, probability, permutations and combination, etc and I could skim through it quickly. However, what followed was such a dense material, I hardly could not understand much. Normal distribution, poisson's distribution, binomial distribution, chi distribution, t, F distribution, Null hypothesis - all sounded very interesting but just went over my head. I mean, I could understand what is going on, but when I looked at the material again, could not remember a thing.

How much is really useful? Will we have to really understand this stuff and use it in some course?

I could understand the application of the material though. It gave me an idea on how the surveys are done, and how they come to conclusion based on such a small sample data. Lots of math going behind it. Interesting!