Example: quiz answers
Even Number
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Entropy and Mutual Information
people.cs.umass.edurepresents whether the roll is even (0 if even, 1 if odd). Clearly, the value of Y tells us something about the value of X and vice versa. That is, these variables share mutual information. On the other hand, if X represents the roll of one fair die, and Z represents the roll of another fair die, then X and Z share no mutual information. The roll