Sets And Probability

Question 1

R

Answer 1

Real numbers, the entire number line

Question 2

Q

Answer 2

Rational: numbers that can be written as a fraction of two integers

Question 3

Z

Answer 3

Integers: whole numbers ( + or - ) and 0

Question 4

N

Answer 4

Natural numbers: positive whole numbers and 0

Question 5

Q’

Answer 5

Irrational numbers: real number that cannot be written as a simple fraction

Question 6

A∩B

Answer 6

Intersection, (AND)

Question 7

A∪B

Answer 7

Union, (OR)

Question 8

∈

Answer 8

Is an element of

Question 9

∉

Answer 9

Not an element of

Question 10

Ø

Answer 10

Empty set

Question 11

U

Answer 11

Universal set

Question 12

A⊆B

Answer 12

Subset, A is a subset of B (set A is included within set B)

Question 13

A⊂B

Answer 13

Proper subset, A is a proper subset of B, (A is not equal to B, strictly smaller)

Question 14

n(A)

Answer 14

Number of elements in A

Question 15

A’

Answer 15

Compliment, compliment of A (not in A but in U)

Question 16

Disjoint

Answer 16

A and B do not share any elements

Question 17

Infinite

Answer 17

Can’t be listed

Question 18

Finate

Answer 18

Can be listed

Question 19

Tree diagrams are used for

Answer 19

Independent events

Question 20

|

Answer 20

Given that

Question 21

If outcomes do not effect each other

Answer 21

They are independent events

Question 22

If one thing is true but another isn’t…

Answer 22

There is no intersection, so they are mutually exclusive

Question 23

A set of branches in a tree diagram

Answer 23

Are mutually exhaustive as all possible outcomes are shown

Question 24

Multiply

Answer 24

Along the tree diagram branches

Question 25

Add

Answer 25

At the end of tree diagram branches

Question 26

Trial

Answer 26

Number of times an experiment is repeated

Question 27

Outcomes

Answer 27

Different results that are possible

Question 28

Event

Answer 28

A particular outcome

Question 29

Frequency

Answer 29

The number of times an outcome occurs

Question 30

Experimental frequency

Answer 30

The number of times an outcome occurs as a fraction of number trials

Question 31

To write down a set

Answer 31

Use curly brackets {}

Question 32

Empty and complete sets

Answer 32

Are always subsets

Question 33

Mutually exclusive events

Answer 33

Events that cannot occur at the same time

Question 34

Independent events

Answer 34

Events that do not effect each other's outcome

Question 35

Probabilities should be

Answer 35

Fractions, decimals, or percentages

Question 36

Probabilities of exhaustive events

Answer 36

Should sum to 1

Question 37

In probability, OR means....

Answer 37

Addition (+)

Question 38

In probability, AND means....

Answer 38

Multiply (X)