probability review

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What is theoretical probability?

Back

Theoretical probability is the likelihood of an event happening based on all possible outcomes, calculated as the number of favorable outcomes divided by the total number of outcomes.

Front

How do you calculate the probability of selecting a specific item from a group?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes).

Front

If a bag contains 5 green, 2 red, and 3 blue jelly beans, what is the total number of jelly beans?

Back

Total = 5 + 2 + 3 = 10 jelly beans.

Front

What is the probability of selecting a red jelly bean from the bag?

Back

P(red) = Number of red jelly beans / Total jelly beans = 2/10 = 1/5.

Front

What does P(not purple) mean in probability?

Back

P(not purple) is the probability of selecting an item that is not purple from a set of items.

Front

If a spinner has 5 sections and 1 is purple, what is P(not purple)?

Back

P(not purple) = (Total sections - Purple sections) / Total sections = (5 - 1) / 5 = 4/5.

Front

What is the expected number of tails when flipping a coin 100 times?

Back

Expected tails = Probability of tails * Number of flips = 1/2 * 100 = 50.

Front

What is a tree diagram in probability?

Back

A tree diagram is a visual representation of all possible outcomes of an event, showing the paths to each outcome.

Front

How do you find the probability of multiple events occurring?

Back

For independent events, multiply the probabilities of each event. For dependent events, adjust the probabilities based on previous outcomes.