Understanding Probability

Which term describes an event that is as likely to happen as it is not to happen?

• Unlikely

• Impossible

• Even chance

• Certain

What is the probability of an event that is certain to happen?

• 1

• 0.25

• 0

• 0.5

If an event is impossible, what is its probability?

• 0.75

• 0

• 0.5

• 1

What two factors are needed to calculate the probability of an event?

• Potential number of desired outcomes and time

• Potential number of desired outcomes and total number of outcomes

• Total number of outcomes and time

• Total number of outcomes and distance

How many possible outcomes are there when rolling a standard die?

• 7

• 6

• 5

• 4

In the example with Alana's name, what is the probability of drawing a card with the letter 'A'?

• 3/5

• 2/5

• 1/5

• 4/5

How can probability be represented in mathematics?

• Only as a fraction

• Only as a percentage

• Only as a decimal

• As a ratio, fraction, decimal, or percentage

What is the decimal representation of the probability 1/6?

• 0.17

• 0.16

• 0.15

• 0.18

If a die is rolled six times, how many times is the side with three dots expected to face up?

• Twice

• Four times

• Once

• Three times

What percentage represents the probability of rolling a three on a die?

• 25%

• 20%

• 16%

• 10%