probability

Question 1

outcomes

Answer 1

result of experiment

Question 2

sample space

Answer 2

set of all possible outcomes (S)

Question 3

events

Answer 3

collection of outcomes (E)

Question 4

elementary events

Answer 4

contain a single outcome

Question 5

compound events

Answer 5

contain more than 1 outcome

Question 6

mutually exclusive events

Answer 6

disjoint
impossible for them to occur together

Question 7

complementary events

Answer 7

anything that excludes the event ‘

Question 8

all complementary events are mutually exclusive…

Answer 8

but not all mutually exclusive events are complementary

Question 9

independent events

Answer 9

result of second event is not affected by result of first event

Question 10

probability

Answer 10

likelihood that an event will happen

Question 11

probability scales (3)

Answer 11

0-1
0%-100%
0-1/1

Question 12

probability formula

Answer 12

no. of favourable outcomes/no. of possible outcomes

E/S

Question 13

intersecting events

Answer 13

have elements in common
AND/multiply
n

Question 14

union of events

Answer 14

OR/ +
u

Question 15

drawing n

Answer 15

keep overlapping areas only

Question 16

drawing u

Answer 16

keep all areas shaded