X 1, 2, 7________________P(X=x) 1/8, 1/8, 1/2

Question

X     1, 2, 7________________P(X=x)  1/8, 1/8, 1/2

David · Accepted Answer

The distribution is not a probability distribution. In a probability distribution the sum of the probability 
of all P(X=x) should be 1. 
But in the given example it is 1/8+1/8+1/2 = 1/4.

X 1, 2, 7 ________________ P(X=x) 1/8, 1/8, 1/2

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