Year 1 Chapter 5: Probability

Question 1

What can a Venn diagram be used for?

Answer 1

To represent events graphically.

Frequencies or probabilities can be placed in the regions of the Venn diagram.

Question 2

How is probability calculated for mutually exclusive events?

Answer 2

P( A or B) = P(A) + P(B).

Question 3

How is probability calculated for independent events?

Answer 3

P( A and B) = P(A) x P(B).

Question 4

What is a tree diagram used for?

Answer 4

To show the outcomes of two or more events happening in succession.