Sets Flashcards

1
Q

Universal Set

A

All elements; all data, no complements

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2
Q

Elements

A

Data point (individual)

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3
Q

Subset

A

Set or grouping within a set

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4
Q

Complement

A

Set of all data not within that set

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5
Q

Intersection

A

Only elements within both sets

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6
Q

Union

A

All elements included in either set (at least one, also both) (total between both)

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7
Q

{x|-3

A

Set-builder notation

The set X contains elements greater than -3 but less than 2, and are all elements of set Z)

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8
Q

[ , ] means

A

Endpoints are included

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9
Q

( , ) means

A

Endpoints are not included

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10
Q

Empty set

A

An intersection with no data in common with the sets

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11
Q

Set

A

A collection of elements

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12
Q

€/ means

A

Not an element of

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13
Q

€ means

A

An element of

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14
Q

C thingy means

A

is a subset of

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15
Q

A’ means

A

Complement of set A

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16
Q

N thingy (between 2 sets) means

A

The intersection of the sets

17
Q

U thingy in between sets

A

Union of the sets

18
Q

o/ or {} means

A

Empty set

19
Q

Bounded intervals

A

The variable is between two less than or greater than symbols

Example
a

20
Q

Unbounded intervals

A

Variable with only one less than or greater than symbol (not enclosed) EXCEPT when outsiders are infinity symbols
Example
x>a
x<a></a>

21
Q

Symbol for using [ , ]

A

Greater/less than or equal to

_

22
Q

Symbol for using ( , )

A

Greater/less than symbol

< or >