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  1. Contributing User
    Devshed Demi-God (4500 - 4999 posts)

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    Bimodal run race time distribution


    [img]Men, 10K grouped into 3 minute buckets. 240 men[/IMG]

    [img]women, same race, 61 runners[/img]

    I don't know how the image tag works. See attached pictures.

    Dave.

    counts---y
    seconds---x
    Attached Images
    Last edited by b49P23TIvg; November 22nd, 2013 at 09:11 PM.
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  2. #2
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    Devshed Newbie (0 - 499 posts)

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    Dave, Hi!

    I discovered that for IMG tags you only need to put URL of image between them. Of course for this image itself should be hosted somewhere (I think there are a lot of sites for this now). Perhaps you also can put the url to attachments.

    BTW, what is the question about these images? Is it about the non-ideal distribution? Though I think ~200 runners are not enough to make ideal distribution...
    CodeAbbey - programming problems for novice coders
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    Devshed Demi-God (4500 - 4999 posts)

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    Well, actually I was merely abusing the devshed forums to post distribution plots for a question in the Math&Physics channel at the free internet chess server (FICs)
    http://www.freechess.org/
    about the distribution of running times in a (yes) small 10K running road race.

    http://www.freechess.org/
    is currently unavailable due, they claim, to a hard disk problem, but the site runs fine for the rest of us as an ftp client.
    Code:
    $ alias FICS
    alias FICS='( time nice nohup gnome-terminal -e '\''xboard -ics -size Middling -icshost freechess.org'\'' >& /dev/null ) &'
    Running races are NOT a Gaussian distribution. They are one sided! There is a minimum time less than which cannot be achieved. Then the question was, is the distribution bimodal, for instance, maybe there's a big group at the front who want to win. (I've run many races, and, having finished front middle and back have a feel for the distribution shape. Races aren't bimodal in that way in my experience.) How about...yes! male female. Data for the race is at http://pastebin.com/ZAnTki9P

    and I don't know where else on the internet to post pictures quickly and freely. I already have an account here. There's no question.
    [code]Code tags[/code] are essential for python code and Makefiles!
  6. #4
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    Devshed Newbie (0 - 499 posts)

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    Let us see how images could be hosted with http://postimg.org:



    Looks like working, and no registration is needed. Hope this could help.

    About distribution - I think it is rather kind of Gamma-distribution, or something like this. (?)

    I was glad to hear about FICS. Several years ago I was fan of playing chess here
    CodeAbbey - programming problems for novice coders
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    Devshed Demi-God (4500 - 4999 posts)

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    Using the "reply" button in lower right I captured the source of your post and stored it locally. I'll need to remember I've done this at some future date.

    Thank you.
    [code]Code tags[/code] are essential for python code and Makefiles!

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