Anticipating Patterns

Question 1

Probability

Answer 1

A measure of the likelihood of an event

Question 2

Sample Space

Answer 2

A set of all possible outcomes of an experiment

Question 3

Tree Diagram

Answer 3

Useful in determining the sample space for an experiment and finding specific probabilities

Question 4

Probability Rules

Answer 4

Rule 1: 0<1

Rule 2: The sum of all probabilities are equal to 1

Question 5

Impossible Event

Answer 5

An event that can never occur (Probability is 0)

Question 6

Sure Event

Answer 6

An event that occurs every time (Probability is 1)

Question 7

Odds in Favor of an Event

Answer 7

A ratio of the probability of the occurrence of an event to the probability of it not occurring
(P(A Occurring)/P (A Not Occurring))

Question 8

Complement

Answer 8

A set of all possible outcomes in a sample space that does not lead to the event

Question 9

Disjoint/Mutually Exclusive Events

Answer 9

Events that have no outcomes in common

Question 10

Union

Answer 10

The set of all possible outcomes that lead to at least one or two events

Question 11

Intersection

Answer 11

The set of all possible outcomes that both events share

Question 12

Conditional Event

Answer 12

A set outcomes for an event given that another event has already occurred

Question 13

Independent

Answer 13

The occurrence of one event does not affect of another event

Question 14

Variable

Answer 14

A quantity whose value varies from subject to subject

Question 15

Probability Experiment

Answer 15

An experiment whose possible outcomes may be known but whose exact outcome is a random event and cannot be predicted with certainty in advance

Question 16

Random Variable

Answer 16

An outcome of a probability experiment

Question 17

Discrete Random Variable

Answer 17

A quantitative variable that takes a countable number of values

Question 18

Continuous Random Variable

Answer 18

A quantitative variable that can take all the possible values in a given range

Question 19

Discrete Probability Distribution

Answer 19

A table, graph, or formula giving all possible values taken by a random variable and their corresponding probabilities

Question 20

Expected Value

Answer 20

The mean of a discrete random variable

Question 21

Combination

Answer 21

The number of ways r items can be selected out of n items if the order of selection is not important

Question 22

Standard Normal

Answer 22

The normal distribution with a mean of 0 and a standard deviation of 1

Question 23

Parameter

Answer 23

A numerical measure of a population

Question 24

Statistic

Answer 24

A numerical measure of a sample

Question 25

Sampling Distribution

Answer 25

The probability distribution of a statistic

Question 26

Standard Error

Answer 26

The standard deviation of a statistic