I think I'm with you so far. We have variance where moves are random, and volatility which tries to measure that randomness right? How do we apply that to our trading and ACD?Are we trying to predict future volatility and if we are, is looking at past vol the best way to do it? Reading over that post the part that really has me confused is the "let me predict variance" comment, how do you predict something that for the most part is random?
No, variance is just a measure of the distribution of prices. It's a description of volatility. We use volatility in ACD because I believe volatility explains price action better then simply price. I also believe time explains price action better then price hence my previous comments from last week. We are NOT trying to predict future volatility. What we are doing is using volatility to "explain" price action. Volatility is random and time is in fixed units. Price is also random. But when you combine all three, you get what we call association. The given variables "explain" the market to us.
