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Data Analysis
terms unit 7
14
Mathematics
7th Grade
04/23/2009

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Cards

Term
Mean
Definition

The average

 

The sum of a set of numbers divided by the number of numbers

Term
Mode
Definition
The number that occurs most often in a set of numbers.
Term
Measure of Central Tendancy
Definition
The number that occurs most often in a set of numbers.
Term
Average
Definition
A single number that represents a set of numbers.
Term
Range
Definition
The difference between the greatest and the smallest number in a set.
Term
Median
Definition
The middle number when a set of numbers is arranged in order.
Term
Outlier
Definition
A number in a set that is very different from the other numbers.
Term
Chance
Definition
A description of a probability expressed as a percent.
Term
Impossible Event
Definition

An event that will never occur.

 

A probablity  of 0%

Term
Certain Event
Definition

An event that will definitly occur

 

An event with a probability 100%.

Term
Independent Events
Definition
Two events that do not effect each other.  One event does not depend on the other.
Term
Tree Diagram
Definition

A diagram that looks like roots of a tree

 

Used to count outcomes

Term
Sample Space
Definition
A list of all the possible outcomes for an experiment that has independent events.
Term
Outcome
Definition
A possible result of an experiment or a possible answer to a question
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