Directional Bias For The Day: S&P Futures are higher; moving lower since 7:30 AM; mostly moving up in an up-sloping channel since 3:45 PM on October 31 Odds are for an up to sideways day with choppiness and elevated volatility – watch for break above 2727.25 and break below 2707.25 for more clarity Key economic data due: Prelim Nonfarm Productivity (2.2%…