Let X and Y be jointly discrete random variables whose distribution has mass 1/4 at each of the four points (-1,0), (0,

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answerhappygod
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Let X and Y be jointly discrete random variables whose distribution has mass 1/4 at each of the four points (-1,0), (0,

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Let X and Y be jointly discrete random variables whose
distribution has mass 1/4 at each of the four points (-1,0), (0,
-1), (1, 0), and (0, 1). Show that X and Y are dependent but that
their correlation coefficient p=0.
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