What are the two requirements for a discrete probability distribution?

Question

Question:

What are the two requirements for a discrete probability distribution?

Answer:

Probability Distributions
There are many types of probability distributions found in statistical studies. Each provides information about the relative probability of encountering a specific occurrence within a particular data set.

Explanation:
Discrete probability distributions have a couple of key characteristics that set them apart from other probability distribution profiles.
1. he discrete function p(x) should greater than or equal to zero. (Should not be less than 0 or negative values)
2. The probability of discrete distribution should summation of p(x) minus infinity to plus infinity formula.

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