TOPIC 2. PROBABILITY Flashcards
A strength of mathematics looking at the chance of events occurring
Probability
It is the science of chances and probabilities
Probability
It is the entire collection of data
Population
It is a subset of the population
Sample
Utilizes probability in making inferences or predictions
Inferential statistics
It is the process by which an observation or measurement is obtained
Experiment
It is the process that generates sets of data
Experiment
Experiment resulting in different outcomes even repeated in the same manner
Random experiment
Recording of information
Observation
It is a set of all possible outcomes of a statistical experiment
Sample space
Each outcome in a sample space
Element or member or sample point
It is the subset of a sample space or a collection of outcomes
Event
Describing a sample space with large number of sample points
Statement method or rule method
Describing a sample space by listing all sample points
Listing method
Four types of events
Null set, compliment, intersection and union
A type of event that contains no elements at all
No sent
A complement of event a with respect to us is the set of all elements that are not you event
Compliment
Event that are common to both events key word is “and”
Intersection
Event containing all elements that belong to either of the events. Keyword “or”
Union
An arrangement or order of all or part of a set of objects
Permutation
Number of ways of partitioning of set of n objects into r cells
Combination
It is a science determining how likely an event to occur
Probability
Two or more events that have no common outcomes are said to cannot occur simultaneously
Mutually exclusive
The probability of an event be occurring when it is known that some event a has occurred and denoted as P(B/A)=P(A UNION B)/P(A)
Conditional probability
