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  1. #1
    Marrdro's Avatar
    Marrdro is offline Beware My Spreadsheet, Bitches!
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    ESPN's New QB Stat

    According to ESPN's own explanation, the stat is based on three primary concepts--Expected Points, Win Probability, and division of credit. As I understand it, QBR begins with a QB's Expected Points Added for each play in which he was directly involved, including both pass plays and runs. It modifies each play's EPA value according to a clutch factor, which is based on Win Probability (WP). Here, I use something similar known as Leverage Index (LI). LI is the ratio of the potential swing in WP for a play compared to the average play's potential swing in WP. For example, an LI of 3 means that a play is 3 times more critical to a game's outcome than the typical NFL play. (You can find any play's LI on the interactive WP graphs here by hovering your cursor over the graph. I still consider it a 'beta' stat because I haven't settled on a final, single definition of potential success and failure for every play.)
    ESPN's New QB Stat
    Many many thanks to my talented friend Jos for the new Sig.http://img.photobucket.com/albums/v343/josdin00/Vikings/Marrdro_sig.jpg

  2. #2
    jmcdon00's Avatar
    jmcdon00 is offline Jersey Retired Snake Champion, Moto Trial Fest 2: Mountain Pack Champion, LL City Truck 2 Champion, Arithmetic sequence Champion, Troops Tower Defense Champion
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    Re: ESPN's New QB Stat

    http://www.purplepride.org/forum/16-general-nfl-discussion/1103445-espns-qb-special-undermines-qb-stat#1103602

    It would be better if they had all the historical stats for it. I wonder how McNabb compares to Favre for there careers and so forth.

  3. #3
    Marrdro's Avatar
    Marrdro is offline Beware My Spreadsheet, Bitches!
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    Re: ESPN's New QB Stat

    Quote Originally Posted by "jmcdon00" #1104679
    http://www.purplepride.org/forum/16-general-nfl-discussion/1103445-espns-qb-special-undermines-qb-stat#1103602

    It would be better if they had all the historical stats for it. I wonder how McNabb compares to Favre for there careers and so forth.
    How did I miss the first thread. Must have been in the closet for that one.

    Not gonna go there on your question. :whistle:
    Many many thanks to my talented friend Jos for the new Sig.http://img.photobucket.com/albums/v343/josdin00/Vikings/Marrdro_sig.jpg

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