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Need help about this tnx

  1. May 8, 2012 #1
    μ=αθ
    σ^2=αθ^2
    can someone show me how to prove that the mean and variance is equal to what is at the top... tnx a lot...:biggrin:
     
  2. jcsd
  3. May 8, 2012 #2

    chiro

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    Science Advisor

    Hey mcguiry03 and welcome to the forums.

    You need to specify what the distribution is and what you are trying to do.

    If you are starting with a distribution X and you have Y =aX and want to find the mean and variance of Y then you use the fact that E[Y] = E[aX] = aE[X] and Var[Y] = Var[aX] = a^2Var[X].

    If it is something else, then you will need to specify what is going on and what you are trying to do.
     
  4. May 8, 2012 #3
    tnx sir
     
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