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Variables and normal distributions

  1. Apr 4, 2013 #1
    Hi everyone,
    I would like to know if this stament is true or not. I have two variables [itex]u,v[/itex] both of them distributed as normal distribution with mean 0 and variance [itex]a^2[/itex]. Is it true that the expected value of [itex]uv[/itex] is [itex]a^2[/itex] ?
  2. jcsd
  3. Apr 4, 2013 #2


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    Staff: Mentor

    If u and v are independent, this is not true.
    Just consider the symmetry of the system.
  4. Apr 4, 2013 #3
    Yeahhh.... its cero. Thanks.
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