Experimental Probability and Theoretical Probability

Experimental probability is________________________

• the ratio of the number of times an event occurs to the total number of trials.

• the likelihood of an experiment being successful.

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

• the likelihood of getting a favorable outcome.

Juan rolled this die 100 times and recorded the following results:

He rolled a 1 - 15 times

He rolled a 2 - 19 times

He rolled a 3 - 17 times

He rolled a 4 - 16 times

He rolled a 5 - 18 times

He rolled a 6 - 15 times

What was his experimental probability of rolling a 2?

• 1/6

• 19/100

• 2/6

• 1/3

Theoretical Probability is

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

• the likelihood that your theory is correct.

• the ratio of the number of favorable outcomes to the number of tries.

• the likelihood that an event might occur.

What is the theoretical probability of rolling this die and getting a 4?

• 4

• 4/6

• 2

• 1/6

Stevie rolled a die 20 times. Here is a graph of her results.

What was her experimental probability of rolling a 3?

• 1/6

• 1

• 1/20

• 3

Jack got a base hit 14 out of his last 25 at bats. If Jack continues at this rate and gets 50 more at bats, how many more base hits can he expect to get?

• 14/25

• 28/50

• 28

• 42

If you choose a letter tile from a bag without looking, what is the theoretical probability of choosing a p?

• 2

• 2/5

• p, p

• 5

The theoretical probability that you will choose a green marble from a bag is 3/7. There are 35 marbles in the bag. How many are green?

• 35

• 7

• 3

• 15

Josh flipped this quarter 50 times. It landed on heads 22 times and it landed on tails 28 times. What was the experimental probability of flipping this quarter and having it land on tails?

• 22

• 28

• 28/50

• 14/25

Shayla scored 12 goals out of her last 20 attempts. If she continues at this rate, how many more goals will she score if she gets 100 more attempts?

• 5

• 29

• 120

• 60