Definitions
If you were to flip a coin and roll a die, you might describe your events this way
What is "Independent"?
The proper approach when we are looking at the possibility of more than one event, but still for one outcome.
What is "The Addition Rule"?
The formula used when trying to find the number of possible outcomes when order does NOT matter.
What is "nCr = (n!)/((n-r)! x r!)"?
What is "1/30" or "0.033"
What is "Creed"?
These are events that cannot and will not ever occur at the same time.
The probability of rolling an even number on a 6-sided die and flipping a Heads on a coin.
What is "3/12" or "1/4" or "0.25"?
If a game of MarioKart has 12 racers, this is the number of different possible race results (in other words, the number of different ways racers can be ranked 1st-12th).
What is "12!" or "479,001,600"?
The probability of drawing a Royal Flush (an Ace, King, Queen, Jack, and 10, all of one suit).
What is "1/311,875,200" or "0.00000000321"
(You could use multiplication rule OR permutations!)
Mr. Cossairt's favorite movie of all time.
The type of probability found purely by data collected through observed experiments.
What is "Empirical Probability"?
What is "32/52" or "8/13" or "0.615"?
The number of possible outcomes, if on a team of 15 baseball players, the coach is trying to determine how to pick his first three batters in the batting order.
What is "2730"?
( 15P3 = 15!/(15-3)! )
The probability that at the annual Indianapolis 500 race, with a starting grid of 33 racers, you will correctly predict the racers who place 1st, 2nd, and 3rd.
What is "1/32,736" or "0.0000305"?
The person on this earth that Mr. Cossairt despises with every single fiber of his being, the mid-est of the mid, the most overrated of the overrated, the one who's name brings him rage beyond belief....
Who is "Taylor Swift"?
If, in a suburb, houses had a 0.45 probability of having a pool and a 0.30 probability of having a garage, this would be the probability of a randomly selected house having ONLY a garage, assuming the events are NOT mutually exclusive.
What is "0.165"?
(0.3 - 0.135)
The total number of different ways you could grab 8 M&Ms out of a bag, given there are 29 in the bag?
What is "4,292,145"
( 29C8 = 29!/((29-8)! x 8!) )
If a bag of Jolly Ranchers has 10 Cherry, 5 Grape, 3 Blue Razz 3 Watermelon, and 4 Green Apple, this is the probability that you will pick exactly 1 Blue Razz, then 1 Cherry, then another Blue Razz - without putting them back into the bag.
What is "60/13800" or "1/230" or "0.00435"
The best superhero, in Mr. Cossairt's humble (but correct) opinion.
Who is "Batman"?
The number of possible outcomes when there are multiple items of the same type.
What are "Distinguishable Permutations"?
If, at a grocery store, customers have a 0.56 probability of purchasing hotdogs and a 0.27 probability of purchasing hamburgers, this is the probability of a customer buying hamburgers or hotdogs.
What is "0.676"?
(0.56+0.27-0.1539 - Not mutually exclusive!)
The SET-UP to find the number of different ways that the seat numbers can be drawn at the start of the week, if we are only looking at the color on them (remember that there are 8 different colors, 30 total seats).
What is "30!/(4!4!4!4!4!4!4!2!)"
Which gives a grand total of over 20 sextillion!
If in your class of 30 students, 5 were chosen as random raffle winners, this is the probability that you could correctly guess all 5 winners.
What is "1/142,506" or "0.00000702"
This is the calendar date of the very first lesson Mr. Cossairt ever taught in this class.
What is "January 28th"?