Hypothetical for you...

Discussion in 'Australian Motorcycles' started by bob_the_rider, Aug 25, 2005.

  1. bob_the_rider

    Brad Guest

    My stat maths is a little rusty, so if I've got a hole in my logic,
    please inform.

    So I have a 6 in 10,000 chance of dying while on the bike. Which is
    0.05%

    I also buy a lotto ticket every week.

    My odds of winning first division each week are roughly 1 in 8,000,000.

    If I live to 80, and I've been buying them since I'm 20, that makes
    4160 tickets. (60 x 52).

    That gives me a 3120/8,000,000 chance of becoming a millionaire via the
    lotto. Or 0.039% chance.

    So the chances of my dying on the bike are exactly 0.011% chance
    greater than my winning the lotto in my lifetime.

    Vegas odds baby. I'll take those.
     
    Brad, Aug 26, 2005
    #21
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  2. Motorcyclists are people too!

    Postman Pat
     
    Pat Heslewood, Aug 27, 2005
    #22
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  3. bob_the_rider

    John Littler Guest

    There actually is a hole in your logic,one's a cumulative probability,
    one's not. However I still reach the same conclusion as you do.

    JL
     
    John Littler, Aug 28, 2005
    #23
  4. In aus.motorcycles on Sun, 28 Aug 2005 09:46:29 +1000
    Hmm.. is it? I've have thought previous trips on a bike mean less
    chance of being killed, not more. Does one trip affect another?

    Also, there's nothing you can do to affect your lotto chances for the
    better, there's a lot you can do to alter your bike-crash chances.

    Don't drink and ride, and be the kind of person who doesn't ride
    unregistered bikes on the road, and doesn't ride without a licence are
    two big ones.

    Closely followed by being over 25 and riding in the city...

    Zebee
     
    Zebee Johnstone, Aug 28, 2005
    #24
  5. bob_the_rider

    John Littler Guest

    You're contradicting yourself Zebee, is the first the case or the
    second? And cumulative doesn't have to be increasing it can be
    decreasing (in fact I'd suggest it's both, the more Km's you do the more
    experience you have hence the less likely you are to do something
    stupid, on the other hand the more Kms you do the more likely you are to
    randomly interact with the drunk/stoned/homicidal/whatever idiot).

    Your percentage likelihood of winning lotto is however unrelated to the
    number of times you've played previously (non cumulative)
    Indeed, which is exactly what I said - lotto is non cumulative
    probability, bikes is cumulative
    Indeed. Although I would suggest the latter is clouded by both the
    former and a set of additional factors - for certain demographics riding
    in the city is far more dangerous, for others it will be less.

    JL
     
    John Littler, Aug 28, 2005
    #25
  6. In aus.motorcycles on Sun, 28 Aug 2005 12:38:57 +1000
    Both :) As you say.
    In NSW, the older riders don't have many city crashes. They do
    themselves in in single vehicle smashes in the country.

    The younger riders are more often injured in town.

    Presumably it's traffic smarts - older riders who have survived to be
    older riders manage the city better. They may also spend more time in
    the country I suppose, but as most have to go through the city to get
    there...

    Zebee
     
    Zebee Johnstone, Aug 28, 2005
    #26
  7. bob_the_rider

    Nev.. Guest

    Why wouldn't increasing the number of tickets you buy improve your probability
    of winning?

    Nev..
    '03 ZX12R
     
    Nev.., Aug 28, 2005
    #27
  8. bob_the_rider

    Knobdoodle Guest

    Yeah but the improvement is so near zero that it doesn't really change your
    chances!
     
    Knobdoodle, Aug 28, 2005
    #28
  9. In aus.motorcycles on Sun, 28 Aug 2005 17:42:47 +1000
    Only if you bought them all in the same draw. Riding more bikes at once
    would probably increase your chances of crashing...

    But how many tickets you buy over your lifetime has nothing to do with
    the chance of winning a given lottery. I suppose entering 5000
    different draws instead of one increases your chances over your
    lifetime, but I don't know if it's by a statistically significant
    amount.

    Zebee
     
    Zebee Johnstone, Aug 28, 2005
    #29
  10. bob_the_rider

    abacus Guest

    Talking of hypotheticals, Geoffrey Robertson is on Enough Rope tonight.

    And Zebee, each tatts draw is an independent event, that's the word you're
    looking for (I won a wopping $25 prize for topping statistics at uni, so I
    must be right).

    abacus
    (who'd be retired now if he'd stuck to economics rather than accounting)
     
    abacus, Aug 28, 2005
    #30
  11. bob_the_rider

    jlittler Guest

    Pedant.

    JL
     
    jlittler, Aug 29, 2005
    #31
  12. bob_the_rider

    John Littler Guest

    Dunno how you worked that out, got some statistics to back it up ?

    JL
    (like the percentage of economics graduates working in economics, and
    their median income.. oh yeah, and add a smiley in there somewhere :)
     
    John Littler, Aug 29, 2005
    #32
  13. stats?

    every day it is becoming more and more obvious that the world is
    populated by educated idiots living in the alternative reality created
    by ststistics

    OF COURSE I BLOODY WOULD

    never been to a football game in me life!
     
    fulliautomatix, Sep 4, 2005
    #33
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