Year 10 Unit 13

What is conditional probability?

• The probability of two independent events occurring together

• The probability of an event occurring given that another has already occurred

• The probability of an impossible event happening

• The probability of events that do not affect each other

What are dependent events?

• Events that affect or are affected by another event

• Events that cannot happen at the same time

• Events that do not affect each other

• Events that always have the same probability

What is a frequency tree used for?

• Showing the relationship between sets

• Displaying the frequency of each possible outcome in a branching diagram

• Listing all possible outcomes of an experiment

• Showing the probability of independent events only

Which of the following describes independent events?

• Events that affect each other

• Events that always have the same outcome

• Events that do not affect or are not affected by another event

• Events that cannot occur together

What are mutually exclusive events?

• Events that cannot happen at the same time

• Events that always occur together

• Events that are always independent

• Events that have an equal chance of occurring

What is a probability scale?

• A scale measuring the probability of events between 0 and 10

• A scale showing the likelihood of an outcome occurring between 0 (impossible) and 1 (certain)

• A scale used to measure the probability of biased events

• A scale showing only even chances of events happening

What does relative frequency represent?

• The sum of all possible outcomes in an experiment

• The probability of an event occurring in a single trial

• The frequency of an event in a dataset divided by the sum of all frequencies

• The number of independent events in an experiment

What is a sample space?

• The most frequent outcome in an experiment

• The set of all possible outcomes of an experiment

• A probability of 0

• The likelihood of an event occurring based on previous trials

What is theoretical probability?

• The actual frequency of events occurring in an experiment

• The probability of an event occurring based on all possible outcomes

• A probability based on previous experiments

• A probability that is always 1

What is a tree diagram used for?

• Showing the probability of each possible outcome in a branching structure

• Recording numerical data in tables

• Displaying relationships between sets using circles

• Predicting the future outcome of events