Probability Quick Check

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, the sun will rise tomorrow.

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 6-sided die.

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What does 'equally likely' mean in probability?

Back

'Equally likely' means that all outcomes have the same chance of occurring. For example, flipping a fair coin.

Front

What is the probability of an event that is 'unlikely, but not impossible'?

Back

This means that the event can happen, but it is not very likely to occur.

Front

If there are 10 candies and 2 are pink, what is the probability of picking a pink candy?

Back

Front

If there are 12 cards and 1 has an 'R' on it, what is the probability of picking that card?

Back

Front

If Mr. Smith has 7 stickers and 4 are blue hearts, what is the probability of picking a blue heart?

Back

Front

If Mr. Smith has 7 stickers and 3 are yellow stars, what is the probability of picking a yellow star?

Back

Front

What is a simple way to express probability?

Back

Probability can be expressed as a fraction, decimal, or percentage.