Simple Probability

Front

An event has a 50% chance of happening. This event is ___?

Back

As likely as not.

Front

An event has a 0% chance of happening. This event is ___?

Back

Impossible.

Front

An event has a 100% chance of happening. This event is ___?

Back

Certain.

Front

What is the probability of landing on blue in a spinner with 4 sections: 1 red, 1 blue, 1 green, 1 yellow?

Back

1/4.

Front

What is the probability of choosing either a black or white marble from a bag if the probability is 3/5?

Back

3/5.

Front

Define probability.

Back

Probability is a measure of the likelihood that an event will occur.

Front

What is the range of probability values?

Back

Probability values range from 0 (impossible event) to 1 (certain event).

Front

What does a probability of 1/2 indicate?

Back

It indicates that the event is equally likely to happen or not happen.

Front

If an event is unlikely, what is its probability range?

Back

Its probability is between 0 and 0.5.

Front

What does it mean if an event is certain?

Back

It means the event will definitely happen, with a probability of 1.