Errrm mate we haven't averaged even close to 1.5 points per game under Allardyce, 15 games 19 points = 1.26 ppg.
More worrying would be the fact that 10 of those 19 came in his first 4 games in charge, so since that initial 'bounce' (2.5 points per game) - we have had 9 points in 11 games - 0.8 points per game, last 4 games - 3 points from 4 games - or 0.75 points per game.
Interesting comparison is that first 14 games of the season before we hired Sam - we had 15 points from 14 games, averaging 1.1 points per game. BFS would need 6 points out the next 4 games to be averaging the same points in the last 14 games as we did in the first 14 which saw us sack one manager and deem another not good enough.
Looking at this season, we aren't being saved by us hiring Allardyce at all, we are gonna stay up due to the effect a new manager bounce had on the complacency amongst the squad (13 points in a 5 game period surrounding the announcement and appointment of a permanent manager)
Just looking at the current trajectory of points per game, we are on target to get about 6 points from the remaining 9 games.