Stats/Math Resource Question

[a2jc4life]

Besides/in addition to Khan (Kahn?) Academy, can anyone recommend a good resource for "translating" math (specifically statistics) concepts to formulas?  I'm working on the ALEKS Intro to Stats class, and I do just fine grasping the concepts -- as long as they're all in text.  But then they shift to formulas and I have trouble understanding how they got from point A to point B.  I need them to define the individual variables they're using within the formulas.

I don't mean mathematically defined; I mean linguistically defined (I guess).  For instance, I need explanations like, "P stands for population.  P1 is population 1; P2 is population 2.  n represents..."  In some cases, I'm not even completely certain which numbers are part of the actual equation and which are simply part of complex variable symbols. 

If I could find a resource -- ideally something in text rather than video -- that would show me how the formula represents the concept, I'd be set.