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Vocabulary
Calculating Probability in Fraction Form
Combinations
P (two independent events)
Grab Bag!
100
What is the definition for probability?
Probability is the likelihood (or chance!) that an event will happen
100
What is the probability of rolling a 3 on a six-sided die?
P (3) = 1/6
100
Ms. Z is choosing where to go for vacation. She can go to New York or California. She can drive or take an airplane. How many total combinations are there?
There are four combinations!
100
You roll a six-sided die twice. What is P (1,2)
P (1,2) = 1/36
100
How would you write P (2) = 1/2 in ratio form?
P (2) = 1:2
200
What is the definition for theoretical probability?
The probability that is calculated by performing "mental experiments"
200
I have 4 blue marbles, 5 red marbles, and 1 yellow marble. What is the probability of randomly drawing a blue marble from the bag?
P (blue) = 2/5 *Note: P (blue) = 4/10 needs to be simplified!!!!
200
Mr. Marder is choosing what to wear. He can choose blue socks or black socks. He can choose grey pants or khaki pants. He can choose a white shirt or a blue shirt. How many different combinations can Mr. Marder choose from?
There are 8 combinations!
200
You have a six-sided die and roll it twice. What is P (even, 6)?
P (even, 6) = 1/12
200
There are 5 blue marbles, 2 red marbles, and 8 green marbles. Is it more likely to randomly select a blue marble or a green marble?
It is more likely to select a green marble than a blue marble because P (green) > P (blue)
300
What is the best definition of experimental probability?
The probability calculated by performing the experiment repeatedly or from collecting data from a sample
300
What is the probability of rolling a 3 or 4 on a six-sided die?
P (3 or 4) = 1/3 *Note: P (3 or 4) = 2/6 needs to be simplified!
300
Ms. Long is deciding what to eat for lunch. She can have a salad, sandwhich, or pasta. She can have soda, orange juice, or water to drink. And, she can have ice cream or a milkshake for dessert. How many different combinations can she choose from?
There are 18 combinations!
300
You have a six-sided die and you roll it twice. What is P (less than 2, greater than 5)?
P (less than 2, greater than 5) = 1/36
300
There are 10 total coins in a piggy bank and 3 of the 10 are pennies. What is the theoretical probability of drawing a penny?
P (penny) = 3/10
400
What is the definition for an independent event?
When the first event affects the second event
400
What is the probability of rolling a number greater than 1 on a six-sided die?
P (greater than 1) = 5/6 *2,3,4,5,6 are the favorable outcomes!
400
Ms. Chadwick is deciding what to do over the weekend. She can wake up early or sleep late. Then, she can go to the park, go to the movies, play soccer, or go on a hike. Finally, she can eat chicken, pasta, or salad for dinner. How many different combinations does she have?
There are 36 total combinations!
400
You have a six-sided die and you roll it twice. What is P (less than 3, greater than 4)?
P (less than 3, greater than 4) = 1/9
400
There are 10 total coins in a piggy bank and 3 of the 10 are pennies. During your experiment, you draw a coin from the piggy bank and put it back into the pile ten times. You get a penny 9 times. How would you compare the experimental probability to the theoretical probability?
The experimental probability is greater than the theoretical probability!
500
What is the definition of independent events?
When the first event DOES NOT affect the second event.
500
There are 17 blue marbles, 8 red marbles, 10 green marbles, and 1 yellow marble. What is the probability of NOT selecting a blue marble?
P (not blue) = 1/2 *There are 36-17 = 18 favorable outcomes
500
Mr. Lenzmeier is deciding what to do after school. He can first check out math tutoring, dance, basketball, drama, or choir. Then, he can grade a classwork, a homework, a quiz, or a final. Then, he can play basketball, watch a movie, or read a book. How many different combinations does he have?
There are 60 total combinations!
500
You have a six-sided die and you roll it twice. What is P (prime, composite)?
P (prime, composite) = 1/6
500
You and your partners should be prepared to answer all four questions: 1. What does it mean to be a math scholar that goes to infinity and beyond? 2. How will your team make sure that your college gets in first place in the Marder Cup? 3. How are you a smartie? 4. What will you do to study tonight for the test tomorrow?
:)