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measures the likelyhood an event will occur
each result/observation of an experiment, such as one roll of a number cube.
is measured between 0 and 1
is a ratio of the number of times an event occurs compared to the total possible outcomes
is the set of all possible outcomes
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
one outcome or a collection of outcomes
any one of the possible results of an action
Outcomes occur at random if each outcome is equally likely to occur.
The events of one outcome happening and that outcome not happening are complementary events. The sum of the probabilities of complementary events is 1.
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.
is a game in which players have an equal chance of winning
What the outcomes were supposed to be theoretically.
What the outcomes did turn out to be in an experiment.
The outcome depends on any other events.
The outcome does not depend on any other event. In other words, it is "independent"
when one or more parts of the population are favored more over the other choosing an advanced math class to represent the whole school
P(green) and P(not green) are called....
Fundamental Counting Principle
(# of choices)(# of choices) = total outcomes
when one event does not effect the other
possible outcomes when position is important; ie 24 people run a race, how many outcomes are their for 1sr, 2nd, and 3rd place
when one events effects the outcome of another event (without replacement)
one outcome or a single collection of outcomes
an event consisting of two or more simple events (choosing a red sock and a blue sock)
the entire group of items or individuals for which a sample is taken (the entire American _______________________, New jersey is a 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
a question or set of questions designed to collect data
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
lies between the lower and upper quartile
the median of the lower half of a set of data
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
A segment or Ray that joins a vertex to the midpoint of the opposite side
the most common value
a data value that is either much greater or much less than the median
a value that divides the data set into for equal parts
The difference between the greatest number and the least number in a set of data.
favorable outcomes divided by unfavorable outcomes
equal probability of occurance
the event that should occur
conclusions drawn from a sample set or sets
most accurately describes the entire population: every 20th from an alphabetical list
A bar graph depicting a frequency distribution. The height of the bars indicates the frequency of a group of scores.
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.
a single outcome or a group of outcomes