Unit 12 Practice

Theoretical probability is based on ___________

• What you have. Without experiments

• your tally. With experiments

Experimental probability is based on

_____________

• What you have. Without experiments

• your tally. With experiments

A bag has 4 green marbles, 3 red, 2 blue and 1 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/6

• 1/9

• 1/3

What is the probability of landing on the color blue on the spinner?

• 3/3
• 1

• 3/12 or 1/4
• 3/9 or 1/3

What is the probability of the spinner landing on red?

• 5/12
• 7/12

• 5/5
• 5/10 or 1/2

Probability ranges from 0 (impossible) to 1 (certain).

• true

• false

A spinner has 5 sections of equal size labeled P, Q, R, S, and T. The arrow of this spinner is spun 15 times and landed 4 times on the section labeled Q.
Which statement best describes the experimental probability and theoretical probability of the arrow landing on the section labeled Q? 

• The experimental probability is 4/15, and the theoretical probability is 1/5.
• The experimental probability is 1/5, and the theoretical probability is 1/5.
• The experimental probability is 4/15, and the theoretical probability is 4/15.
• The experimental probability is 1/5, and the theoretical probability is 4/15.

What type of graph is this?

• Bar Graph
• Histogram
• Line Plot

How many people watched between 6 and 10 hours of TV last week?

• 31
• 22
• 15
• 35

How many times did she practice for at least 45 minutes?

• 6

• 7

• 9

• 12