Theoretical
Experimental
Vocabulary
What is the Probability?
Probability Words
100

One dice is thrown.  What is the probability of rolling a 3?

1/6

100

A coin is flipped 100 times and the results were 25 heads and 75 tails.  Based in the experiment what is the probability of flipping the coin and getting heads up?

25/100 or 1/4

100

What does "certain" mean?

There is 100% chance of an event happening.  It WILL happen.

100

What is the probability that a coin is flipped and lands on tails?

1/2

100

How likely is it that the sun will rise tomorrow?  Choose from impossible, unlikely, likely, and certain.

certain

200

Bob has 2 red socks and 2 blue socks.  What is the probability of randomly selecting a red sock?

2/4 or 1/2
200

A coin is tossed 1000 times resulting in 700 heads and 300 tails.  Is this what you would expect to happen?  Why or why not?

I would expect it to land on heads 500 times and tails 500 times because there is an equal chance of landing on heads and tails.

200

What does "impossible" mean?

There is no chance of the event happening.

200

What is the probability that a number cube is tossed and lands on 5?

1/6

200

How likely is it that there will be a snowstorm in July?  Choose from impossible, unlikely, likely, and certain.

impossible

300

What is the probability of rolling an odd number on a number cube?

3/6 or 1/2

300

A letter tile is randomly selected from a bag, recorded, and replaced 16 times. The results are listed below. What is the experimental probability of selecting the letter "E"? A = 4, E = 5, I = 4, and O = 3

5/16

300

What does "likely" mean?

An event probably will happen.

300

What is the probability that a number cube is tossed and lands on 8?

0/6

300

How likely is it that you will be sick tomorrow?  Choose from impossible, unlikely, likely, and certain.

unlikely

400

There are 3 red marbles, 2 green marbles in a bag.  You take a marble out of the bag and put it back 10 times.  How many times will you probably pick red?

6/10

400

Mohammad flipped a coin 1000 times.  He got heads 200 times and tails 800 times.  What can we say about the coin?

There is something wrong with it.  It is not fair.  Maybe it is weighted so that it is more likely to land with tails up.

400

What is theoretical probability?

The probability that an event will happen (what "should" happen).

400

What is the probability that a number cube is tossed and lands on any number 1-6?

6/6

400

How likely is it that the teacher will make you read something in class tomorrow?  Choose from impossible, unlikely, likely, and certain.

likely

500

Diego spins a spinner with 5 equal sections numbered 1-5 and he spins another spinner with 5 equal sections with the letters A-E. What is the probability he will spin a 4 and a B?

1/25

500

A six-sided die is thrown 50 times. Using the list below, how does the theoretical probability of rolling a 3 compare to the experimental probability of rolling a 3? This is the list of the number rolled followed by the quantity 1:8, 2:6, 3:7, 4:12, 5:10, 6:7

The experimental probability is 7/50 = 14%

The theoretical probability is 1/6 = 17%

500

What is experimental probability?

The probability of an event happening during an experiment (what actually DOES happen).

500

What is the probability that two coins are tossed and one lands on heads and one lands on tails?

2/4 or 1/2

500

How likely is it that you will see graduate from grade 8 tomorrow?  Choose from impossible, unlikely, likely, and certain.

impossible