7th Grade-Probability Review

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the formula for calculating the probability of an event?

Back

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

Front

If a coin is tossed, how many possible outcomes are there?

Back

There are 2 possible outcomes: Heads or Tails.

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.

Front

How many total outcomes are there when rolling a six-sided die?

Back

There are 6 total outcomes: 1, 2, 3, 4, 5, 6.

Front

What is the probability of rolling a 3 on a six-sided die?

Back

The probability is 1/6.

Front

What does it mean to replace an item in probability?

Back

Replacing an item means putting it back into the sample space before the next trial, keeping the total number of outcomes the same.

Front

How do you calculate the probability of independent events?

Back

For independent events, multiply the probabilities of each event.

Front

What is a tree diagram in probability?

Back

A tree diagram is a visual representation of all possible outcomes of a probability experiment.

Front

If there are 3 shirt options and 2 pants options, how many outfit combinations can be made?

Back

There are 6 outfit combinations (3 shirts x 2 pants).