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Functions of random variable and their expected value

  1. Apr 16, 2010 #1
    suppose we have random variable defined a function of another random variable such that [tex] Y = \mathbb{E}(X) [/tex]
    it seem then [tex] Y[/tex] is a constant. then [tex] \mathbb{E}(Y) = \mathbb{E}(X) [/tex] does this even make sense ?
  2. jcsd
  3. Apr 17, 2010 #2


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    If Y=E(X), then it is constant. Calling Y a random variable doesn't make sense. What is the context?
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