Which of the following are properties of a valid discrete probability distribution?
A)p(X)
B) $\Sigma$p(X)= 1
C)A only
D)B only
E)A and B

Question

Quizplus · Accepted Answer

A valid discrete probability distribution should have a probability mass function, denoted as p(X), which assigns a probability to each possible outcome in the sample space. This corresponds to choice A. 
The sum of probabilities of all possible outcomes in the sample space must be equal to 1. This corresponds to choice B, which states that the sum of all probabilities p(X) should equal 1. Therefore, the correct answer is E, as both A and B are properties of a valid discrete probability distribution.

Which of the Following Are Properties of a Valid Discrete Σ\SigmaΣ

Which of the Following Are Properties of a Valid Discrete $\Sigma$