7th Grade Support 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 a sample space?

Back

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

Front

What is the probability of rolling an even number on a standard die?

Back

The probability is 3/6 or 1/2, since the even numbers are 2, 4, and 6.

Front

What is the probability of rolling a 5 on a standard die?

Back

The probability is 1/6, as there is one 5 and six possible outcomes.

Front

What is the probability of spinning a green on a spinner with 4 equal sections (red, blue, green, yellow)?

Back

The probability is 1/4, as there is one green section out of four.

Front

How do you calculate the probability of two independent events occurring together?

Back

Multiply the probabilities of each event. For example, P(A and B) = P(A) * P(B).

Front

What is the probability of rolling a 3 and spinning a red on a die and spinner?

Back

The probability is 1/6 (for rolling a 3) * 1/4 (for spinning red) = 1/24.

Front

What is the formula for calculating probability?

Back

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

Front

What is an event in probability?

Back

An event is a specific outcome or a set of outcomes of a probability experiment.

Front

What is the probability of drawing a red marble from a jar containing 3 red and 2 blue marbles?

Back

The probability is 3/5, as there are 3 favorable outcomes out of 5 total.