Introduction to Probability

What is the probability of flipping heads in a coin toss?

• 1/2

• 1/3

• 1/6

• 1/4

What does a probability of 1 indicate?

• The event has a 50% chance of happening

• The event is definitely going to happen

• The event is impossible

• The event is uncertain

How is probability commonly expressed besides fractions?

• Decimals and percentages

• Words only

• Pictures

• Graphs

What is the probability of rolling a 3 on a standard die?

• 1/6

• 1/2

• 1/3

• 1/4

If a spinner has 16 equally sized sectors, what is the probability of spinning a 12?

• 1/12

• 1/8

• 1/6

• 1/16

What is the probability of spinning a blue if there are 5 blue sectors out of 16?

• 11/16

• 1/16

• 5/11

• 5/16

What is the probability of pulling out a green marble from a bag containing 3 green, 7 yellow, and 1 white marble?

• 10/11

• 3/11

• 7/11

• 1/11

What does the total of all possible outcomes' probabilities equal to?

• 2

• 1/2

• 0

• 1

What is the probability of an event that is impossible?

• 1/2

• 1

• 1/4

• 0

How does conducting more trials affect the results in a probability experiment?

• Increases the accuracy to expected probabilities

• Makes the results completely unpredictable

• Decreases the accuracy to expected probabilities

• Has no effect on the results