OK here is a question.

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  • wantitall4moi
    SBR MVP
    • 04-17-10
    • 3063

    #1
    OK here is a question.
    If 16% of all NFL games finish with 3 point differentials, and every game was lined -3 what percentage of games would be pushes?
  • warriorfan707
    SBR Posting Legend
    • 03-29-08
    • 13698

    #2
    not possible to answer, it depends on if the dog or fav won the game by 3
    Comment
    • Justin7
      SBR Hall of Famer
      • 07-31-06
      • 8577

      #3
      The 16% isn't that releveant. As warrior fan alluded to, the push rate is what matters.

      I think the breakdown is about 10%/6% (a home fav of -3 will push about 10% of the time; a 3-point dog will win by 3 about 6-7%).
      Comment
      • wantitall4moi
        SBR MVP
        • 04-17-10
        • 3063

        #4
        Originally posted by Justin7
        The 16% isn't that releveant. As warrior fan alluded to, the push rate is what matters.

        I think the breakdown is about 10%/6% (a home fav of -3 will push about 10% of the time; a 3-point dog will win by 3 about 6-7%).

        I have all the break downs, and there really is no one answer because so many books post too many lines to say for certain when a game is -3 in the first place, I posted some of the numbers over at EOG, but not too specific. But home favs closing -3 (in one of my databases) pushed 39 times out of 447 games, roughly 8.7%. Road -3 favs pushed 26 of 306, 8.5% so not much of a difference. Those results are from 1994 to 2010. But that is just the closers at that one book. I can break down line moves back to 2001, and see where some of those games that closed -3 may not have started there, or sme that didnt close -3 did start at -3 and moved. And other lines that closed something else hit -3 for at least a flash.

        I just thought there might be a way to determine the dogs chance to win by 3 versus the favs chance to win, and go from there. But I figured it would be a stretch since even though games are all posted -3 they obviously arent all going be weighted the same. At least without looking at results and try and call that the probability.

        Basically I was wondering if there was a neutral way to predict the probability of something happening without using the past results or known scores.

        Because like I have always said, and when I started saying it it was 13%, that a fav that is lined -3 winning by 3 wasnt 13% probability. Nor is it now 8.6% ,as the findings now show, (at least for that book). I just wanted to see if someone had a guestimate of what it should be and how t was matching up to the results we can see.

        This is related to the question the other guy had about variance. I just slipped in some known factors to see if it could be plugged into any know probability formula.
        Comment
        • That Foreign Guy
          SBR Sharp
          • 07-18-10
          • 432

          #5
          bout tree fiddy.
          Comment
          • wiffle
            SBR Wise Guy
            • 07-07-10
            • 610

            #6
            50/50

            either it does or it doesnt
            Comment
            • wantitall4moi
              SBR MVP
              • 04-17-10
              • 3063

              #7
              OK how about this, a hypothetical to see if there is a formula....

              16% of games finish with a 1 pt differential
              100% of games are lined-1
              60% of the games will be won by the favorite.


              chances/probability the fav wins by 1 pt.
              Comment
              • WendysRox
                SBR High Roller
                • 07-22-10
                • 184

                #8
                I'm not proficient enough in statistics to come up with a confident response to the probability question, but my search for the answer led me to this website: http://www.westgard.com/lessons-5.htm

                So, thanks for that.

                edit: Confidence Interval is the phrase I was trying to remember. Here is a lesson about it from that same website: http://www.westgard.com/z-11-confidence-intervals.htm. And, just to be clear, I'm sure most of the think tank regulars are familiar with these formulas. I post these articles for those users like me that are trying to improve their understanding of math as it pertains to gambling.
                Last edited by WendysRox; 08-26-11, 09:08 PM.
                Comment
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