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Vocabulary
Data and Probability
Making Predictions
Calculating Probability
Permutations and Combinations
100
This phrase describes the expected probability of an event.
What is theoretical probability?
100
This describes the type of probability found when using data from results.
What is experimental probability?
100
Out of 100 fair coin flips, you expect this many tosses to be heads.
What is 50?
100
There are three green marbles and four blue marbles in a bag. The person before you picked and kept a blue marble and it is your turn to choose. What is the probability that you will choose a blue marble?
1/2
100
The number of possible ways to hand out the gold, silver, and bronze medals to the 8 finalists of the Olympic 100 Meter Dash
336 possible ways.
200
This describes the situation in which the outcome of the first event affects the outcome of the second.
What is dependent probability?
200
The probability that a randomly selected student from the following survey plays soccer. Football had 13 votes, Hockey had 27 votes, Soccer had 25 votes, and Tennis had 15 votes.
What is 5/16?
200
You roll a fair six-sided die 72 times. How many times do you expect to roll a 5?
12 times.
200
The odds of rolling two sixes in a row on a fair die.
1/36
200
The number of possible ways to pick groups of 5 from a class of 12
792 ways
300
This describes picking objects or people in situations where order does matter.
What is a permutation?
300
In a recent study of 91 students, 14 were found to sleep nine hours a night, 13 were found to sleep eight hours a night, 42 sleep seven hours a night, and 22 sleep six or fewer hours a night. What is the probability that a randomly selected student will sleep FEWER THAN EIGHT hours each night?
About 70%
300
A person has about a 2% chance to be born with green eyes. If the population of Colorado Springs is 427,000 people, about how many have green eyes?
About 8,540 people
300
The probability of drawing a heart and a spade in a hand of Blackjack (keeping the cards) from a deck of 52 cards.
16/2652 = 4/663
300
DAILY DOUBLE! A championship tournament bracket is randomly set up for 8 teams, with each team facing one other team in the first round. Teams that are entered in this tournament are ranked in order for likelihood to win. What is the probability that the 8th ranked team will face either the 1st, 2nd, or 3rd ranked team in the first round?
3/28
400
This operation is usually represented as a ! after a number (example: 4!)
What is factorial?
400
Describe a situation in which experimental probability (rather than theoretical probability) would be useful.
Probability after taking a survey
400
In a survey, 56 people preferred mornings to nights. If about 40% of people prefer mornings to nights, how many people were surveyed?
140 people
400
When flipping a coin 3 times, the probability of flipping two heads and then a tail.
1/8
400
Huey, Melissa, and Michelle are three of ten members of a tennis team. The tennis team arranges its ten members into partners for an upcoming tournament. What is the probability that a partnership will have two of the three friends (Huey, Melissa, or Michelle)?
3/45 = 1/15
500
This is the notation used to find, for example, the number of possible ways to pick a team of five people out of a total group of ten people.
What is 10c5?
500
You have flipped a fair coin 10 times. The results are recorded below. Heads: 7 Tails: 3 What is the probability that your next flip will be tails?
50%.
500
On a roulette wheel, 18 possible spins are black, 18 possible spins are red, and two are green. Of 760 spins, how many would you expect to be either black or red?
About 720
500
The probability of drawing a Poker hand (5 cards) consisting of the 10, Jack, Queen, King, and Ace (all of hearts - a Royal Flush with hearts)
1/311,875,200
500
How many possible outcomes are there for arranging six different cans of soup on a cupboard from left to right on one cabinet and five boxes of cereal from left to right on the next?
86,400 possibilities