They are based on historical data and probability which is a great way of looking at it.
Alternatively you can go through all of the games left for us, Leeds, Burnley, Sunderland etc and make your own predictions for each game, then add it up - which would be based on personal opinion.
Personally I think the latter would show fewer points totals than the graphs, so I'll go with the graphs.
They indicate around 92 points I think, that may be tight though.
That could be 11 wins and 4 draws and 4 defeats from the remaining games, which makes me feel quite confident.
As always, all the teams will drop points they aren't expected to, especially as nerves and pressure kicks in through the last 10 games.