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Central moments

  1. Apr 22, 2008 #1
    can someone help me with this problem?

    E[(x^3 + 7x^2)^3]
    what is the central moments?

    mij=E[(x-xbar)^i * (y-ybar)^j]
  2. jcsd
  3. Apr 22, 2008 #2
    Welcome to PF

    If you don't specify what exactly you want to know, where your problem lies, I cannot help you - and don't want to.

    A good thing to start would be to tell something about the distribution of what you called X ...or Y ...
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