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Choose a random number.

  1. 1

    5.4%
  2. 2

    1.1%
  3. 3

    2.2%
  4. 4

    3.2%
  5. 5

    4.3%
  6. 6

    3.2%
  7. 7

    10.8%
  8. 8

    5.4%
  9. 9

    3.2%
  10. 10

    4.3%
  11. 11

    8.6%
  12. 12

    9.7%
  13. 13

    4.3%
  14. 14

    5.4%
  15. 15

    3.2%
  16. 16

    3.2%
  17. 17

    4.3%
  18. 18

    6.5%
  19. 19

    8.6%
  20. 20

    3.2%
  1. Jun 9, 2009 #1
    Make sure it is really random. No cheating!
     
  2. jcsd
  3. Jun 9, 2009 #2

    Moonbear

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    Can you really "choose" a random number?
     
  4. Jun 9, 2009 #3

    neu

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    You can't cheat, but you also can't "choose"; lose, lose situation
     
  5. Jun 9, 2009 #4

    BobG

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    I don't like this game. There aren't enough choices. I wanted to pick 1729.03.
     
  6. Jun 9, 2009 #5
    Before I vote, I would like to clear up one thing. Is 18 a random number?
     
  7. Jun 9, 2009 #6

    neu

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    18 is as random as 7
     
  8. Jun 9, 2009 #7

    DaveC426913

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    I am going to bet that you will find a non-random distribution. There will be a statistically significant lack of hits at the ends as well as at the middle, resulting in a double-humped graph.

    When asked to choose a number between 1 and 10, a more-than-average number of people will choose 3 or 7 because, psychologically, those numbers are more "hidden".
     
  9. Jun 9, 2009 #8
    I remember hearing that you can tell the difference between a sequence of 1's and 0's generated by a pseudo-random generator, and one generated by a person. Apparently, when people generate a sequence, they avoid long runs.
     
  10. Jun 9, 2009 #9

    CRGreathouse

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    Four is a random number: it was chosen by a fair die roll.
    http://xkcd.com/221/

    Myself, I used the seconds digits of the current time, mod 20.
     
  11. Jun 9, 2009 #10

    CRGreathouse

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    I would have guessed the same thing -- but it seems that we have just the opposite in the distribution so far.

    Of course, not so much as to make it fail a chi-square: 14.67 vs. the 19.68 needed to reject at 0.05 level with 11 degrees of freedom.
     
    Last edited: Jun 9, 2009
  12. Jun 9, 2009 #11
    I closed my eyes moved the cursor around in the vicinity of the numbers and then clicked. It took a couple tries.
     
  13. Jun 9, 2009 #12
    I closed my eyes and moved my cursor to one of the numbers (it was 7). Initially, I wanted to choose 4.


    I thought people wouldn't pick numbers near boundary because they appear less random but I guess I am wrong. (I went towards to middle to make it look like random)
     
  14. Jun 9, 2009 #13
    I also did the same thing :)
     
  15. Jun 9, 2009 #14

    Moonbear

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    I would predict that if you put this poll up on any other forum aside from PF, that is precisely what you would see. I think that the folks here at PF are too aware of these patterns and will actually try to break them. I'm curious to see what pattern might instead emerge...maybe the mirror image of what you were predicting.
     
  16. Jun 9, 2009 #15

    DaveC426913

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    Guilty. :biggrin: I chose 1.
     
  17. Jun 9, 2009 #16

    BobG

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    I used the random number scale on my Schmendrolog slide rule. This is a great military slide rule, as it's resistant to EMP.

    195-scales2.jpg

    194-schmend.jpg
     
  18. Jun 9, 2009 #17
    I did the same thing and ended up clicking on the advertisements. :shy:
     
  19. Jun 9, 2009 #18
    I'm the first to pick 10. I'm awesome!
     
  20. Jun 9, 2009 #19

    LowlyPion

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    I chose a time of day in seconds, divided by 20, and voted the remainder.

    Seems a random choice enough for me.
     
  21. Jun 9, 2009 #20

    drizzle

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    I wanna choose 7 could I:biggrin:, now randomly picking I get 6 [apparently the first to pick it]


    can I ask, what's the point of this thread?
     
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