1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Conditional Variance equation

  1. Jul 19, 2012 #1
    I am working on studying for a probability exam and I just came across conditional variance, but I can't find anything in my materials for how to solve it.

    If I want to find the conditional variance of Y given that X=x, or Var[Y|X=x], how would I solve it? I am given a continuous distribution function of:

    f(x,y) = 2x, for 0<x<1, x<y<x+1
    otherwise 0.

    How do I set up this question?

  2. jcsd
  3. Jul 20, 2012 #2

    Ray Vickson

    User Avatar
    Science Advisor
    Homework Helper

    Set it up the standard way: first determine the conditional density f(y|X=x).

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook