Results 1 to 4 of 4

Math Help - Casualty and correlation

  1. #1
    Newbie
    Joined
    Jun 2009
    Posts
    12

    Casualty and correlation

    hi, say we have two variables.

    engine size and rural driving fuel usage
    and
    engine size and urban driving fuel usage.

    now these two variables are obviously linked no doubt.. however are they casual?

    i did a scatter plot and it seemed that the relationship between engine size and rural driving fuel usage was greater than urban driving fuel usage.

    what is the meaning behind this?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by luysion View Post
    hi, say we have two variables.

    engine size and rural driving fuel usage
    and
    engine size and urban driving fuel usage.

    now these two variables are obviously linked no doubt.. however are they casual?

    i did a scatter plot and it seemed that the relationship between engine size and rural driving fuel usage was greater than urban driving fuel usage.

    what is the meaning behind this?
    Read these: Correlation does not imply causation - Wikipedia, the free encyclopedia

    Does Correlation Prove Causation | Reference.com

    Tainted Ideals: Fallacy Friday: correlation and causation; a good working synopsis
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jun 2009
    Posts
    12
    hey cheers for that.
    so is this a fair statement?

    - to say engine size and the fuel usage rate for either urban and rural driving is casual is incorrect as although they may be strongly correlated other factors are also responsible for the cause of the fuel usage rate increase or decrease.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by luysion View Post
    hey cheers for that.
    so is this a fair statement?

    - to say engine size and the fuel usage rate for either urban and rural driving is casual is incorrect as although they may be strongly correlated other factors may also responsible for the cause of the fuel usage rate increase or decrease.
    Looks OK. Read these: Lurking Variables

    Confounding - Wikipedia, the free encyclopedia
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Correlation
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: April 20th 2010, 06:44 AM
  2. Correlation
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: April 16th 2010, 02:29 PM
  3. Correlation
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: December 6th 2009, 07:21 PM
  4. MIN, MAX from correlation
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: September 28th 2009, 06:10 AM
  5. sample correlation and population correlation
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: November 23rd 2008, 04:31 PM

Search Tags


/mathhelpforum @mathhelpforum