Discrete Probability
Distributions
Discrete Probability Distribution consists of the values a random variable can assume and the corresponding probabilities of the values. The probabilities are determined theoretically or by observation.
Building a Discrete Distribution:
Step 1
Make a frequency table for the outcomes of the variable
Step 2
Find the probability for each outcome by dividing the frequency of the outcome by the sum of the frequencies.
Step 3
If a graph is required, place the outcomes on the horizontal axis and the probabilities on the vertical axis, and draw vertical bars for each outcome and its corresponding probability.