Hi everyone, I'm ready for my first question here... every response is appreciated. If I want use some statistics/analysis/whatever in my algo trading/strategy development, do I ever need to really know the math behind it (calculus, combinatorics, probability theory, theorems etc.) OR it's just good enough (from practical point of view) to use well known high level concepts: distributions, regressions, well known models, pricing models etc. And use all this stuff like black box. What do you say? P.S. I do really well software development and all aspects of software engineering. It's not so hard to close the "math" gap, but avoid to waste a single minute.