Year 10 Probability

Question 1

Probability

Answer 1

Measure of how likely something is to happen
Probability of an event = number of outcomes favourable to event / total number of possible outcomes

Question 2

Experimental probability of an event

Answer 2

Number of times the event occurs / total number of possible outcomes

When number of trials in an experiment is large, experimental probability of an event = theoretical probability of the event

Question 3

Sample space

Answer 3

Decorated by the letter S, for any random experiment
Collection of all the possible outcomes of the experiment - a list

Question 4

What is an event of an experiment

Answer 4

An event E of an experiment is a collection of outcomes
P(E) = n(E) / n(S)

n(E) = number of outcomes favourable to event
n(S) = number of total possible outcomes in the sample space