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    dale358z's Avatar
    dale358z Posts: 2, Reputation: 1
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    #1

    Sep 26, 2011, 05:06 PM
    Random Numbers?
    This has to be a difficult problem to solve so any input is greatly appreciated.

    Quick Overview: I play this online game (racing game) and the point of the game is to "guess" as close as possible to the "magic number".

    I am trying to figure out how to predict the next number in the "random" sequence. (It's 52 numbers long, so bear with me) 77, 18, 36, 72, 35, 19, 62, 33, 30, 62, 32, 84, 34, 21, 68, 74, 63, 72, 39, 58, 69, 52, 65, 47, 43, 74, 69, 74, 45, 85, 30, 20, 31, 67, 73, 57, 81, 85, 25, 20, 73, 74, 84, 82, 38, 80, 28, 70, 74, 46, 77, 59,

    I have tried countless times to try and figure it out, I have figured out the next number successfully a few times, but have found no long-term solution. I have even tried asking my stats teacher, but she had no luck.

    Again any input would be helpful. Thanks!
    -CJ
    paraclete's Avatar
    paraclete Posts: 2,706, Reputation: 173
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    #2

    Sep 26, 2011, 07:02 PM
    You said the next number is randomly selected so the whole point is you cannot predict it.

    It is apparent that the lowest number in the sequence is 20 and the highest number is 85. The number 74 also occurs more frequently than others. You could try using a random number generator yourself. Spreadsheets have a RND function but you do lack one important piece of information, the base number.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Sep 27, 2011, 02:00 AM
    And if you plot the points, you can't see any trend whatsoever:
    paraclete's Avatar
    paraclete Posts: 2,706, Reputation: 173
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    #4

    Sep 27, 2011, 06:57 AM
    Quote Originally Posted by Unknown008 View Post
    And if you plot the points, you can't see any trend whatsoever:

    ah but I can, look at the points above 70 and draw a line of best fit, but remember the number is random
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    Unknown008 Posts: 8,076, Reputation: 723
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    #5

    Sep 27, 2011, 09:51 AM
    Well, if you take the correlation coefficient of the numbers above 70, you get 0.09927, which rounds up to 0.1 and which means there is no correlation... (-1 and 1 meaning there is a negative and positive correlation and that there is a certain relationship)
    dale358z's Avatar
    dale358z Posts: 2, Reputation: 1
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    #6

    Sep 27, 2011, 06:25 PM
    Thanks for the responses guys. I really appreciate it. I guess the numbers are truly random. Again Thanks for responding.
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