Directional Bias For The Day: S&P Futures are higher; The odds are for an up day with elevated volatility – watch for break below 2906.25 for change of fortune  Key economic data due: Prelim GDP (2.0% vs. 2.0% est.; prev. 2.1%) at 8:30 AM Goods Trade Balance (-72.3B vs. -74.0B est.; prev. -74.2B) at 8:30…