Probability Vocabulary
Theoretical Probability
Theoretical vs.
Experimental
100

A ratio or product of the likelihood of an event(s) determined by mathematical facts known to us.

Theoretical Probability

100

When rolling one die...

P(3)= ?

1/6

100

Mr. Barker found the probability of drawing a spade to be 1/5. Did he find the theoretical or experimental probability? 

Experimental Probability

200

What actually occurs in an experiment when you conduct an experiment(s).

Experimental Probability

200

When flipping 2 coins 

P(both coins are heads)= 

1/4 

200

What is the theoretical probability of landing on green or blue? 

1/2

300

All results that could occur from an experiment

All Possible Outcomes 

300

When rolling two die...

P(rolling a 7)=


6/36 or reduced to 1/6

300

What is the experimental probability of landing on green or blue? 

3/8

400

A set of one or more outcomes in a probability experiment.

An event

400

What is the theoretical probability of picking a purple marble?

1/11

400

What is the theoretical probability of not landing on green? 

3/4

500

The results that you want to happen in an experiment

D_______ O_______

Desired Outcome 

500

What is the probability of landing on a green? 

1/4 

500

What is the experimental probability of not landing on green? 

17/20