Probability Likelihood, Relative Frequency

A coin is flipped three times. What is the probability that the coin will land tails up once and heads up twice, if the order doesn't matter?

(Hint: Draw a tree diagram to help you.)

Probability ranges from 0 (impossible) to 1 (certain).

• true

• false

The likelihood that an event will occur is called __________________.

• event

• probability

• outcome

• sample space

Using the experimental probability to predict the probability of more trials is called ____________________.

• sample space

• event

• outcome

• relative frequency

Experimental probability is based on what really does happen after a trial.

• True

• False

A probability of 0 means that the likelihood of the event happening is ______________________________.

• certain

• unlikely

• likely

• impossible

A probability of 1/2 means that the likelihood of an event happening is __________________________.

• equally likely/even chance

• unlikely

• very likely

• likely

A probability of 3/4 means that the likelihood of an event is ______________________________.

• very unlikely

• certain

• likely

• equally likely/even chance

A probability of 1/5 has a likelihood of __________________.

• highly unlikely

• unlikely

• likely

• equally likely/even chance

A probability of 2/3 is __________________________.

• impossible

• certain

• likely

• unlikely