Theoretical Probability and Experimental Probability

What was the experimental probability of rolling a number greater than 4?

• 1/9

• 1/6

• 4/9

• 5/18

You plant 30 African violet seeds and 9 of them sprout. Use experimental probability to predict how many will sprout if you only plant 20 seeds?

• 6

• 11

• 18

• 21

What is the theoretical probability for rolling a number greater than 4?

• 1/6

• 1/3

• 1/2

• 2/3

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

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

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.

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

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