CEVAP:

The probability distribution of a discrete random variable is a list of odds associated with each of its possible values. It is also called the probability function or the probability mass function. Basically we can define probability function as a rule that assigns probabilities to the values of random variables. For a discrete random variable X, probability function (probability mass function) must satisfy the following properties,

1. The probability of each value of the discrete random variable X must be between or equal to 0 and 1. 0 ? P (X = x) ? 1 for all
2. The sum of the probabilities of each outcome of the random variable must equal to 1.