Simple probability formative assessment

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 it mean if an event is 'certain'?

Back

An event is 'certain' if it will definitely happen. For example, flipping a coin will always result in either heads or tails.

Front

What does it mean if an event is 'impossible'?

Back

An event is 'impossible' if it cannot happen at all. For example, rolling a 7 on a standard six-sided die.

Front

What does 'likely' mean in probability?

Back

'Likely' means that an event has a high chance of occurring, but it is not guaranteed.

Front

What does 'unlikely' mean in probability?

Back

'Unlikely' means that an event has a low chance of occurring.

Front

How do you express probability in fraction form?

Back

Probability can be expressed as a fraction of the number of favorable outcomes over the total number of possible outcomes.

Front

If a bag has 4 red marbles and 6 blue marbles, what is the probability of picking a red marble?

Back

The probability of picking a red marble is 4 out of 10, or 4/10.

Front

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

Back

The probability of rolling a 3 is 1 out of 6, or 1/6.

Front

What does 'equally likely' mean?

Back

'Equally likely' means that all outcomes have the same chance of occurring.

Front

If you have a spinner divided into 4 equal parts, what is the probability of landing on any one part?

Back

The probability of landing on any one part is 1 out of 4, or 1/4.