Theoretical
ONE DICE IS THROWN, WHAT IS THE PROBABILITY OF ROLLING A 3
1/6
A coin is flipped 100 times and the results were 25 heads and 75 tails. Based on the experiment what is the probability of flipping the coin and getting heads up?
25/100 or 1/4. 0.25, 25%
Define what it means for an event to be "equally likely".
50/50 chance of happening, just as likely to happen as to not happen
A coin is flipped and lands on tails.
Equally Likely
What is 1/4 as a percentage?
25%
List the sample space for flipping a coin.
{Heads, Tails}
What is the probability of rolling an odd number with a standard number cube?
1/2, or 0.50, or 50%
A coin is tossed 1000 times resulting in 700 heads and 300 tails. What does this mean about the coin?
It is not fair
Define an "impossible event."
An event that can never happen. A probability of 0 or 0% chance.
A number cube is tossed and lands on 3.
Unlikely
How is 90% written as a decimal?
0.90
How many possible outcomes are there when rolling a standard number cube?
6 possible outcomes
A carousel has 2 jumping horses and 3 standing horses. What is the probability of randomly selecting a jumping horse?
2/5, or 0.40, or 40%
There are 3 red marbles, 2 green marbles, and 1 blue marble in a box. What is the probability of drawing the blue marble?
1/6, 0.1667, 16.67%
What is a sample space?
The list of all total outcomes/possibilities
A standard number cube (1-6) is tossed and it lands on 8.
Impossible, 0%, never going to happen
How is 50% written as a fraction?
1/2
How do you calculate probability?
# of desired outcomes / total possible outcomes
Jarvonya spins a spinner with 9 equal sections numbered 1-9. What is the probability she will spin a number greater than 2?
7/9, 0.778, 77.8%
1/2, 50%
Define "theoretical probability'. Is it based on calculation or experiment?
It is the calculated probability
A number cube is tossed and lands on any number 1-6.
Certain - 100%
How do you write the probability of 2/3 as a percentage?
66.67%
There are 3 red marbles, 2 green marbles, and 1 blue marble in a box. If you draw a marble out 100 times, how many times would you expect to draw RED?
50 times
A student rolls a standard number cube 200 times. How many times would you expect to roll a number less than 3?
66 or 67
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
Define "experimental probability."
The probability of what actually occurs based on an experiment.
A standard number cube lands on a 2 or greater.
Likely
Write the probability "2 out of 13" as a fraction, decimal and percentage?
2/13, 0.1538, 15.38%
BONUS POINTS! Draw the probability "spectrum" of likelihood with numbers and the word labels.
Impossible(0) ____Unlikely(0.2)_____Equally Likely(0.5)_________Likely(0.7)_________Certain (1)