Permutation Formula (order matters)
0
Combination Formula (order doesn't matter)
Sample Set
list of all possible outcomes for a given situation
Mutually Exclusive
Events that cannot occur at the same time
Mutually inclusive
Two events that can happen at the same time.
Factorial
Used in determining the different arrangements of objects. For example: How many ways can you arrange 4 desks? 4! which means 4 x 3 x 2 x 1 = 24 ways
Probability
The likelihood that an event will occur. The probability that an event will occur is 0, 1, or somewhere between 0 and 1.
Mean
the average, obtained by adding the scores and then dividing by the number of scores
Mean Formula
Mode
The number that occurs most often in a set of data
Median
The middle number in a set of numbers that are listed in order