Basic Probability
What is the probability of flipping heads on a fair coin?
1/2 or 50%
Experimental probability is based on what?
Actual experiment results or trials
Two events are independent if one does not affect the what?
Outcome of the other event
What counting method considers order important?
Permutations
Odds compare favorable outcomes to what?
Unfavorable outcomes
A standard die has 6 sides. What is the probability of rolling a 4?
1/6
If a coin is flipped 20 times and lands on heads 12 times, what is the experimental probability of heads?
12/20 or 0.6
Drawing a card without replacing it creates what kind of events?
Dependent Events
What counting method does NOT consider order important?
Combinations
Convert 0.25 into a percent
25%
What is the probability of drawing a red card from a standard deck of cards?
1/2
Theoretical probability is based on what?
Mathematical outcomes
What is the probability of rolling two 6s in a row?
1/36
How many ways can the letters ABC be arranged?
6
Convert 3/4 into a decimal
0.75
If an event is impossible, what is its probability?
0
True or False: Experimental probability always equals theoretical probability
False
What mathematical operation is usually used for independent events happening together?
What does 5! mean in probability and statistics?
5 factorial
If the odds are 2:3, how many unfavorable outcomes are there?
3
If an event is guaranteed to happen, what is its probability?
1
As the number of trials increases, experimental probability usually gets closer to what?
Theoretical probability
A bag has 3 red and 2 blue marbles. Without replacement, what is the probability of drawing two red marbles?
3/10
What is the value of 5!?
120
A probability of 0.9 means there is what percent chance of the event happening?
90%