Probability

Question 1

Probability

Answer 1

Numerical measure of degree of belief or relative frequency of events

Question 2

Sample space

Answer 2

The set of all possible outcomes in a trial

Question 3

Sample point

Answer 3

One of the possible outcomes in a sample space

Question 4

Event

Answer 4

A particular set of sample points, to which a probability can be assigned

Question 5

Random variable

Answer 5

A variable that takes on a different value depending on the even that occurs

Question 6

Discrete

Answer 6

A finite number of possible outcomes

Question 7

Continuous

Answer 7

An infinite number of outcomes

Question 8

Complementary event

Answer 8

The probability of not getting a certain event

Pr(notA) = 1 - Pr(A)

Question 9

Disjoint events

Answer 9

Two event that are independent of each other ie one event has no impact on the other

Pr(A or B) = Pr(A) + Pr(B)

Question 10

Non-Disjoint Events

Answer 10

If two event are not independent of each other ie one event impacts the other

Pr(A or B) = Pr(A) + Pr(B) - Pr(A&B)

Question 11

Cumulative distribution

Answer 11

Cumulative probability up to a certain value of X

Question 12

Expected value

Answer 12

The average value

There is a formula on formula sheet