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This Glossary contains a definition of all of the concepts covered in the Statistics and Probability Module.



Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O
P | Q | R | S | T | U | V | W | X | Y | Z | ALL

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B

Bar Graph

:
A Bar Graph is a type of display that consists of parallel bars or rectangles(either vertical of horizontal) that have lengths proportional to the frequency with which quantities occur in a set of data. ( Also called a bar chart.) [LINK TO A SPECIFIC EG. in supplement.
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C

Circle Graph

:
A Circle Graph is a type of display that shows data as parts of a whole circle. The circle represents the whole and each sector of the circle proportionately represents a part of the whole. (Also called a Pie Chart) [THIS NEEDS TO BE LINKED TO THE SUPPLEMENT FOR AN EG.]
Keyword(s):

Claim

:
A Claim is an assertion that has associated with it a truth value. A claim can be thought of as an idea or theory.
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Correlation

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Correlation is the the tendency for one variable to increase or decrease as the other variable increases.

E

Event

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An Event is one or any collection of outcomes of an experiment. [LINK TO AN EXAMPLE IN THE SUPPLEMENT HERE]
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I

Independent Events

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Two events are independent if the occurrence of one of the events gives us no information about whether or not the other event will occur.
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L

Line Graph

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A Line Graph is a type of display in which data points are plotted in the coordinate plane and are joined together using line segments. (Also called Line Chart)
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M

Mean

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The mean of a data set or collection of numbers is the sum of all of the numbers divided by the total number of numbers.  The mean is often called the average.  For example, the mean of the numbers

     {2,5,11}

is 6 because

     2 + 5 + 11  =  18

There are 3 numbers, so

     18/3  =  6

Keyword(s):

Median

:

The median of a set of numbers is the either the middle number of the ordered list if there is an odd number of numbers or the average of the two middle numbers if there is an even number of numbers.

For example: 

5,3,7,4,2 has median 4 since 4 is the middle number of the list 2,3,4,5,7.

3,5,9,10 has median 7 since 5 and 9 are the middle numbers and the average of 5 and 9 is 7.

Keyword(s):

Mode

:

The Mode of a collection of numbers is the number or numbers that occur most frequently.

Example:  the mode of the numbers 1,2,4,4,4,5,6,6 is 4 because the number 4 occurs three times, more that any other number.

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