Vocab
A number that represents the likelihood of an event occurring. Can be a fraction, decimal, or a percent but is typically a fraction or percent.
Probability
flipping tails on a quarter
1/2
There is a 1/5 chance of failing this question.
unlikely
How many outcomes does a coin have?
2
flipping heads twice in a row
1/4
Probability that is based on repeated trials of an experiment; what actually happened after doing an experiment
experimental probability
pulling an ace from the deck
4/52 = 1/13
The probability of growing to 100ft tall
impossible
How many outcomes does a deck of cards have?
52
rolling an odd number on a dice then flipping tails on a coin
1/4
The probability of two or more events
compound probability
Rolling a number greater than or equal to 1 on a die
1 or 100%
The odds of flipping tails on a coin
equally likely as it is unlikely
A password with only 2 characters. The characters can ONLY be lower case letters.
26 x 26 = 676 outcomes
rolling a number greater than 1 and then rolling a number less than 6
25/36
the outcomes of a specific event
Favorable outcomes
Selecting a vowel from a bag that contains the letters of the alphabet (for simplicity, "Y" is NOT going to be a vowel.)
5/26
The chance of rain today is 90%
Likely
Color: green, blue, orange, purple
Shape: triangle, trapezoid, circle, square
Food: spaghetti, taco, chili
48
rolling a number greater than 6, flipping tails, flipping heads, rolling a number less than 5
0
What are the two ways to find the outcomes in a compound event?
tree diagram and fundamental counting principle
0 or 0%
In a bag of red marbles, you select a red marble.
certain
A code with 6 digits (0-9 could be inputted)
10^6 = 1,000,000
flipping heads, rolling a 5, rolling a 2
1/72