Sets

Question 1

Universal Set

Answer 1

All elements; all data, no complements

Question 2

Elements

Answer 2

Data point (individual)

Question 3

Subset

Answer 3

Set or grouping within a set

Question 4

Complement

Answer 4

Set of all data not within that set

Question 5

Intersection

Answer 5

Only elements within both sets

Question 6

Union

Answer 6

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

Question 7

{x|-3

Answer 7

Set-builder notation

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

Question 8

[ , ] means

Answer 8

Endpoints are included

Question 9

( , ) means

Answer 9

Endpoints are not included

Question 10

Empty set

Answer 10

An intersection with no data in common with the sets

Question 11

Set

Answer 11

A collection of elements

Question 12

€/ means

Answer 12

Not an element of

Question 13

€ means

Answer 13

An element of

Question 14

C thingy means

Answer 14

is a subset of

Question 15

A’ means

Answer 15

Complement of set A

Question 16

N thingy (between 2 sets) means

Answer 16

The intersection of the sets

Question 17

U thingy in between sets

Answer 17

Union of the sets

Question 18

o/ or {} means

Answer 18

Empty set

Question 19

Bounded intervals

Answer 19

The variable is between two less than or greater than symbols

Example
a

Question 20

Unbounded intervals

Answer 20

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

Question 21

Symbol for using [ , ]

Answer 21

Greater/less than or equal to

_

Question 22

Symbol for using ( , )

Answer 22

Greater/less than symbol

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