Gr. 7 Unit 8 Lessons 1 - 9 Flashcard Review

Front

What is an impossible event when spinning a spinner?

Back

An impossible event is one that cannot occur. For example, if a spinner only has numbers 1 to 6, landing on 7 is impossible.

Front

What is the probability of rolling a number less than or equal to 2 on a standard number cube?

Back

The probability is 2/6 or 1/3, since there are 2 favorable outcomes (1 and 2) out of 6 possible outcomes.

Front

How do you calculate the probability of an event not occurring?

Back

The probability of an event not occurring is 1 minus the probability of the event occurring. For example, if the probability of landing on A is 1/6, then the probability of not landing on A is 5/6.

Front

How many unique ways can you order a frozen yogurt with one flavor and one topping?

Back

You can order a frozen yogurt in 12 unique ways if there are 3 flavors and 4 toppings (3 flavors x 4 toppings = 12).

Front

What is the total number of outcomes when rolling two number cubes?

Back

The total number of outcomes is 36, since each cube has 6 faces (6 x 6 = 36).

Front

Define probability.

Back

Probability is a measure of how likely an event is to occur, expressed as a ratio of favorable outcomes to total possible outcomes.

Front

What is a sample space in probability?

Back

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

Front

What is a favorable outcome?

Back

A favorable outcome is an outcome that satisfies the conditions of the event we are interested in.

Front

Explain the concept of independent events in probability.

Back

Independent events are events where the outcome of one event does not affect the outcome of another event.

Front

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

Back

The probability of an event is calculated as P(E) = Number of favorable outcomes / Total number of outcomes.