1.1 Flashcards
What is probability?
The chance of a particular event taking place.
What is a random experiment?
The process of having a single result in the end that cannot be controlled or predicted with certainty.
What is an element?
An outcome of the experiment.
What is an event?
The elements of interest that you are looking for and these elements share a common characteristic.
What is a sample space?
The total number of elements of the experiment.
How to find the probability of an event - X?
P(X) = n(X) / n(S)
How do you find the sample space?
n(S) = r (results or outcomes) ^ m (trials or instances)
What are the axioms of probability?
- ) 0 = P(A) = 1
2. ) P(S) = 1
What is Set Theory Notation?
The method of writing probability conveniently and consistently.
What is the complement?
The sample outside of the event - the complement of A is everything except sample A.
What is a union?
The “or” in the situation, for example, there are two events: A and B you would say the probability of A or B or Both.
What is an intersection?
The “and” in the situation is the probability where 2 events overlap.
What are DeMorgan’s Laws?
Being able to simplify calculations of probability involving unions and intersections.
What is mutual exclusivity or disjoint?
When the intersection of 2 events is equal to 0 which means that the events are independent of each other and do not overlap or intersect.
