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Thread: Need exact definition.

  1. #1
    Newbie Tris's Avatar
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    Need exact definition.

    Hi everyone! Guys, please need your help. I want to know what difference between discrete and continuous variable. I understand that is easy question but google and wiki doesnt give right definition. Any advice... I will appreciate it.
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  2. #2
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    Re: Need exact definition.

    The sample space of a discrete variable is countable. That of a continuous variable is not.
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  3. #3
    Newbie Tris's Avatar
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    Re: Need exact definition.

    Like fun you are right. I found interesting example - length for example is continuous you can get any value 3 3.1 3.1235 3.12323455333
    But if you measure the length in the centimeters only (3cm, 4cm, 5cm) it is a discrete variable.
    the number of children is discrete, you can't have 3.123 children in the class.
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    Newbie Tris's Avatar
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    Re: Need exact definition.

    Im researching some articles and compare this woth wiki. Best answer i found in this article https://whatsadifference.com/differe...nuous-variable
    By the way romsek you was right. And thanx for help.
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  5. #5
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    Re: Need exact definition.

    Quote Originally Posted by Tris View Post
    you can't have 3.123 children in the class.
    nah, 0.123 child probably isn't enough for it to be in a class.

    You might be able to get away with 0.5 child and up if the appropriate bits were present!
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  6. #6
    Newbie Tris's Avatar
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    Re: Need exact definition.

    Why? Can you explain?
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    Re: Need exact definition.

    it's a joke.... if perhaps a sick and macabre one

    0.123 of a child is just a leg or so. Not much reason to try and educate a leg.

    At 0.5 of a child you have enough there to probably keep them alive and thus educatable
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    Re: Need exact definition.

    Quote Originally Posted by romsek View Post
    0.123 of a child is just a leg or so. Not much reason to try and educate a leg.
    What if that 0.123 part is the brain?
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    Re: Need exact definition.

    Quote Originally Posted by Tris View Post
    Hi everyone! Guys, please need your help. I want to know what difference between discrete and continuous variable. I understand that is easy question but google and wiki doesnt give right definition. Any advice... I will appreciate it.
    There are some concepts that are not understandable if a person's background is not sufficient to support the explanation.
    This is one such example. Here is a simple example:
    Suppose that $\mathscr{D}$ is the set of all rational numbers in $[0,1]$ and $\mathscr{I}$ is the set of all irrational numbers in $[0,1]$
    Now $\mathscr{D}$ is a discrete set while $\mathscr{I}~$ is a continuous set.

    Now I fully understand if one does not follow that, but in fact that makes my point.
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  10. #10
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    Re: Need exact definition.

    Quote Originally Posted by Monoxdifly View Post
    What if that 0.123 part is the brain?
    good luck keeping it alive
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