Originally posted by milesbk23
The author, Stanford Wong, showed tables of the frequency of the margin of scores in NFL games. He then went to show what price you would have to pay to buy on or off a key number, for example buying from -3 1/2 to -3 or buying from -3 to -2 1/2.
The thing that hit me that made perfect sense was that the books know this too. They aren't going to allow you to buy these numbers unless it was to the bettor's disadvantage in the long run.