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Thread: How do we test the independence of two variable in a joint probability mass function?

  1. #1 How do we test the independence of two variable in a joint probability mass function? 
    Forum Freshman
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    Jul 2013
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    I know you need to integrate f(x,y) with respect to y (gives f(y)) and f(x,y) with respect to x (gives f(x))between -oo and oo+ and verify the equation f(x,y) = f(x)f(y), but I don't know what to do when we have joint probability mass functions.


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  3. #2  
    Forum Ph.D.
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    In this context what do you mean by "joint probability mass function"? Isn't it simply f(x,y)?


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