Directional Bias For The Day: S&P Futures are lower; The odds are for a down day with elevated volatility – watch for break above 2880.75 and 2883.25 for change of fortune Key economic data due: CPI (0.3% vs. 0.3% est.; prev. 0.1%) at 8:30 AM Core CPI (0.3% vs. 0.2% est.; prev. 0.3%) at 8:30…