CHAPTER 12 PROBABILITY

Question 1

complementary event

Answer 1

The ‘opposite’ event, for example the complementary event to selecting an Ace from a deck of cards is selecting a card that is not an Ace

Question 2

relative frequency

^{_{Probability - Wordbank}}

Answer 2

The frequency of an event over repeated trials as a fraction of the total number of trials

Question 3

tree diagram

^{_{Probability - Wordbank}}

Answer 3

A diagram of branches for listing all of the possible outcomes of a multi-step chance experiment

Question 4

trial

^{_{Probability - Wordbank}}

Answer 4

One go or run of a repeated probability experiment, for example, one roll of a die

Question 5

two-step experiment

^{_{Probability - Wordbank}}

Answer 5

A chance experiment with two steps or stages, such as rolling a pair of dice

Question 6

two-way table

Answer 6

A way of grouping items into two overlapping categories, such as gender and the ability of driving a car​

Question 7

Venn diagram

Answer 7

A diagram of circles (usually overlapping) for grouping items into categories

Question 8

Experimental probability

P(E) __ number of times the event h______ total/n____ of trials

P(E) __ frequency of __/total f_______

Answer 8

Experimental probability

P(E) 1⁄4 number of times the event happened total/number of trials

P(E) 1⁄4 frequency of E/total frequency

Question 9

C__________ events are events that t_______ make up all the p_______ outcomes, such as a h___ and a t___ when tossing a coin.

Answer 9

Complementary events are events that together make up all the possible outcomes, such as a head and a tail when tossing a coin.

Question 10

Expected f_______ is the expected number of times an e____ will occur over repeated t____.

Expected f_______ 1⁄4 t_______ probability 3 number of t____.

Answer 10

Expected frequency is the expected number of times an event will occur over repeated trials.

Expected frequency 1⁄4 theoretical probability 3 number of trials.