Conditional Probability
What is conditional probability used for?
Conditional Probability is used to calculate the probability of a second event happening that is affected by a first event happening.
What is a two way frequency table?
A 2 way frequency table is a way of organizing data where you put the number of times something happened on the right of the collum, and what result happened on the left.
What is a tree diagram?
A tree diagram is a diagram that shows all possible outcomes of interdependent things branching outwards.
What is the meaning of conditional probability
Conditional probability means, assuming the first event has occurred, the probability of the second event occurring is:
What is a two way frequency table used for?
It is used to see how many times each variable happened in a probability question.
What is a tree diagram used for?
A tree diagram is used to see all the possible outcomes of interdependent events.
There are 300 people at a Kroger. 150 of them buy bananas, 50 of them buy apples, and 25 of them buy bananas and apples . What is the probability of someone who bought bananas also buying apples?
16.6666 percent
When is a two way frequency table best used?
A 2 way frequency table is best used for looking at surveys or problems with lots of variables.
When is a tree diagram best used?
A tree diagram is best used for calculating the outcome of many events.
You need to draw a red king to win the game. The first card drawn is a 7 of clovers. What is the probability of the next card being a red king?
2/51 or 3.9 percent
You need to roll an eight on two six sided dice to win a game. The first roll that you get is a five. What is the probability that the next roll will be a 3?
2/5 or 40 percent.