Making Predictions: Theoretical and Experimental Probability

Which is an example of theoretical probability?

• The probability of rolling a 4 on a die is 1/6.

• I flipped a coin and it landed on tails 2/10 times.

Which is an example of experimental probability?

• The spinner landed on three 7 out of 10 times (7/10)

• The probability of landing on tails is 1/2.

A reasonable mathematical guess that something is about to happen

• Probability

• Compound Event

• Prediction

• Sample Space

Isidro flips a fair coin 40 times. How many times can he expect heads to appear?

• 4

• 10

• 15

• 20

Scarlett selects a card at random from a deck that contains 18 red, 12 yellow, and 20 blue cards. What is the probability that she does not select a red card?

• 13/25

• 16/25

• 18/25

• 24/25

Find the theoretical probability of NOT landing on yellow if you spin the spinner.

• 1/8

• 7/8

• 1

• 7

What is the theoretical probability of picking a vowel from the letters A, B, C, D, and E?

• 2/5

• 2/3

• 1/5

• 25%

Find the experimental probability:
Roll dice:  1, 3, 3, 4, 4
P(1) = 

• 3/5

• 1/6

• 2/5

• 1/5

Find the experimental probability:
Roll dice:  1, 3, 3, 4, 4
P(3) = 

• 3/5

• 1/6

• 2/5

• 1/3

Which of the following describes theoretical probability?

•   Perform an experiment to determine the probability

•       Determining the expected probability of an event

• Perform a simulation and count the number of possible outcomes

• Use trials to count the number of desired outcomes