Ch. 4.1 Probability Distribution Function PDF for a Discrete Random Variable.pdf

Quiz 2: Due March 24
Exam 2: April 5
**Recall Discrete Variables - data that are the result of counting; where it can only take certain values (Like
whole numbers).
Is a table or an equation that links each outcome of a statistical experiment with its probability of
occurrence.
•
Example: The table below shows each possible outcome with its probability •
Probability Distribution
Each probability is between zero and one, inclusive 1.
The sum of the probabilities is one 2.
Discrete Probability Distribution Function has two characteristics
For Example:
Suppose the random variable X is defined as the number of
heads that result from two coin flips; then the table represents
the probability distribution of the random variable X.
Outcomes