Level 223
Level 225

#### 52 words 0 ignored

Ready to learn
Ready to review

## Ignore words

Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.

**Ignore?**

P(event)

measures the likelyhood an event will occur

Trial

each result/observation of an experiment, such as one roll of a number cube.

probability

is measured between 0 and 1

Probability( ratio)

is a ratio of the number of times an event occurs compared to the total possible outcomes

sample space

is the set of all possible outcomes

Zero probability

means event not possible

Probability of 1/2

means event is as likely as not to occur

Probability of one

means event is certain to occur

Fundamental Counting principal

multiply the total number of possible outcomes for each event together. Roll one number cube is 6 possible outcomes. Spin a spinner with 2 equal sections is 2 possible outcomes. Together teh outcomes are 6 x 2 = 12

simple events

one outcome or a collection of outcomes

outcome

any one of the possible results of an action

random

Outcomes occur at random if each outcome is equally likely to occur.

complementary event

The events of one outcome happening and that outcome not happening are complementary events. The sum of the probabilities of complementary events is 1.

sample spaces

A list of all of the possible outcomes in a probability experiment. It is easy to find the number of outcomes you are supposed to have in your sample space if you use FCP.

fair game

is a game in which players have an equal chance of winning

Theoretical Probability

What the outcomes were supposed to be theoretically.

experimental probability

What the outcomes did turn out to be in an experiment.

dependent event

The outcome depends on any other events.

independent event

The outcome does not depend on any other event. In other words, it is "independent"

biased sample

when one or more parts of the population are favored more over the other choosing an advanced math class to represent the whole school

complementary events

P(green) and P(not green) are called....

Fundamental Counting Principle

(# of choices)(# of choices) = total outcomes

independent events

when one event does not effect the other

Permutation

possible outcomes when position is important; ie 24 people run a race, how many outcomes are their for 1sr, 2nd, and 3rd place

dependent events

when one events effects the outcome of another event (without replacement)

Simple Event

one outcome or a single collection of outcomes

compound event

an event consisting of two or more simple events (choosing a red sock and a blue sock)

Population

the entire group of items or individuals for which a sample is taken (the entire American _______________________, New jersey is a sample)

sample

a randomly selected group chosen for the purpose of collecting data. ie 3 middle schools in Monmouth county to determine information regarding typical Middle School student in Monmouth County

survey

a question or set of questions designed to collect data

Tree Diagram

used to show a sample space

box-and- whisker plot

a graphic way to display the median, quartiles, and extremes of a data set on a number line to show the distribution of the data

interquartile

lies between the lower and upper quartile

lower quartile

the median of the lower half of a set of data

Mean

the sum of all the values divided by the number of values

Measures of Central Tendency

used to describe the center of a set of data: mean, median, mode

measures of variation

used to describe the distribution of data

Median

A segment or Ray that joins a vertex to the midpoint of the opposite side

Mode

the most common value

outlier

a data value that is either much greater or much less than the median

quartiles

a value that divides the data set into for equal parts

Range

The difference between the greatest number and the least number in a set of data.

odds

favorable outcomes divided by unfavorable outcomes

equally likely

equal probability of occurance

expected outcome

the event that should occur

inferences

conclusions drawn from a sample set or sets

unbiased sample

most accurately describes the entire population: every 20th from an alphabetical list

Histogram

A bar graph depicting a frequency distribution. The height of the bars indicates the frequency of a group of scores.

Frequency distribution

A summary chart, showing how frequently each of the various scores in a set of data occurs

Law of Large Numbers

As the number of trials in a probability experiment increases, the experimental probability approaches the theoretical probability.

Stem & Leaf Plot

a graph that is ordered from least to greatest and is organized by place value.

Event

a single outcome or a group of outcomes