Simple Probability

Front

What is probability?

Back

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

Front

What does a probability of 0 mean?

Back

A probability of 0 means that the event cannot happen.

Front

What does a probability of 1 mean?

Back

A probability of 1 means that the event is certain to happen.

Front

What does it mean if an event has a probability of 1/2?

Back

It means that the event is equally likely to occur or not occur.

Front

What is the probability of spinning a green if the spinner has 4 equal sections: green, blue, red, and yellow?

Back

Front

If an event has a probability of 3/8, how would you describe it?

Back

It is considered unlikely.

Front

If an event has a probability of 21/23, how would you describe it?

Back

It is considered likely.

Front

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

Back

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

Front

What is the probability of spinning either green or blue if the spinner has 4 equal sections: green, blue, red, and yellow?

Back

Front

What is the probability of an event that cannot happen?

Back

The probability is 0.