Understand Theoretical Probability

What is the probability of spinning the spinner in the picture and landing on green?

What is the probability the spinner stops on yellow?

• .05

• 1/2

• 1/3

• 3/8

What is the probability of pulling a red marble out of a jar of marbles that have 10 green marbles, 7 red marbles and 3 blue marbles?

• 1/7

• 7/20

• 7/10

• 3/10

What is the P( not purple) on this spinner?

• 2/5

• 1/5

• 4/5

• 3/5

The ratio of the number of ways an event can occur to the number of possible outcomes.

• odds

• theoretical probability

•  outcomes

• dependent event

Vy is shopping for a car. It comes in red, blue, or silver. She can also choose a 2-door and 4-door version along with a manual or automatic transmission. What is the theoretical probability that Vy will pick 4-door car, automatic transmission and it being red or blue?

Mathematical Equivalence

ON

​ (a)   Probability: what ​ (b)   in a probability experiment

• Theoretical

• should happen

• Hypothetical

• Law of

• will happen

Theoretical Probability is?

• What Should happen

• What does happen

• What Will Happen

• What I want to Happen

What is Theoretical Probability?

• The ratio of favorable outcomes to the total number of possible outcomes

• The ratio of favorable outcomes to the total number of trials in an experiment

• In probability, a controlled, repeated process (such as repeatedly tossing a coin).

• A single possible result.

You roll a standard number cube one time. What is the probability that you get a 3 or 4?