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Introduction to Probability

Introduction to Probability

Author: Kendra Wheeler

Common terms used in probability examples
Examples on the different terms
Demonstrate the rule of probability-- probability always has a value between 0 and 1.

Terms used when calculating probability.
Introduction to probability
The rule of probability
The three different kinds of probability of events
Examples of probability

co-author: Laura Kniffin

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Experiment: Is a situation involving chance or probability that leads to the results.

Outcome: Is the result of a single trial of an experiment.

Probability: is the measure of how likely an event is.


A Random Sample is a sample from a population in which all of the individual values in the sample were selected according to their likelihood or probability in the population.  


Sample Space: The concept in probability theory, which considers all the possible outcomes for an event or experiment.

Sample Point: A single possible outcome that is a member of the sample space.

Event: is any collection of outcomes in an experiment

Mutually Exclusive: Two events that cannot possibly occur together.  Example: A subject cannot be both brown eyed and blue eyed, nor can they be both tall and short, but a subject could be both brown eyed and short or both blue eyed and tall.

All Inclusive: The entire population. Your entire sample falls into one category. For example, the census includes all male and female, it does not exclude any category. 


Probability with replacement: a sample of the probability data that is selected, observed, and then placed back into the population sample to possibly be drawn again.


Probability without replacement: a sample of the probability data is selected, observed, but then not placed back into the population sample. 

Introduction to Probability

Rule of Probability

Probability of an Event

Probability Examples

Examples of experimental, theoretical and subjective probability.