Results 1 to 2 of 2

Math Help - covarience

  1. #1
    Newbie
    Joined
    Apr 2010
    Posts
    14

    covarience

    hello everybody
    what is happening when a co-variance of two random variable is zero but they are not independent?i mean that what is the relation between this two random variable?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Apr 2010
    Posts
    2
    look at the defintion of covariance...

    if the variables are indepndent you know the joint pdf can be written f_{X,Y}(x,y) = f_{X}(x) f_{Y}(y)

    so now assuming X & Y are not independent, what properties of the joinit pdf would lead to zero covariance?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. covarience MATH EMERGENCY
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: December 20th 2010, 05:59 PM
  2. Expeted value, Covarience help
    Posted in the Advanced Statistics Forum
    Replies: 4
    Last Post: May 27th 2009, 04:50 PM

Search Tags


/mathhelpforum @mathhelpforum