Which of the following is NOT a required condition for a discrete probability function?
A) f(x) ≥ 0 for all values of x
B) ∑f(x) = 1
C) ∑f(x) = 0
D) All of the answers are correct.

Question

Quizplus · Accepted Answer

A discrete probability function must always have non-negative probabilities, so A is required. The sum of all probabilities must equal 1, so B is required. However, the sum of probabilities cannot equal 0, as that would mean there is no chance of any event occurring, making the function invalid. Therefore, C is not a required condition for a discrete probability function.

Which of the Following Is NOT a Required Condition for a Discrete