Understanding Certain and Uncertain Events

The video introduces the concept of probability, explaining how it measures the likelihood of events. It uses a number line to describe events as impossible, certain, or equally likely. Examples are provided to illustrate these concepts, such as the certainty of June following May and the impossibility of horses breathing underwater. The video concludes with a hope that viewers will engage with probability questions and hints at further learning in the next video.

What does probability measure?

• The certainty of an event

• The likelihood of events happening

• The cost of an event

• The time an event takes

On a number line, where would you place an event that is impossible?

• Anywhere on the line

• On the left end

• On the right end

• At the center

What is an example of an equally likely event?

• Rolling a die

• Flipping a coin

• Spinning a wheel

• Drawing a card

As you move from equally likely towards impossible on the number line, events become:

• Equally likely

• More likely

• Certain

• Less likely

Which of the following is an example of a certain event?

• It will rain tomorrow

• The sun will rise tomorrow

• A coin will land on heads

• A die will show a six

If today is Monday, what is certain about tomorrow?

• It will be Tuesday

• It will be Friday

• It will be Sunday

• It will be Wednesday

What is the likelihood of horses breathing underwater?

• Certain

• Impossible

• Equally likely

• Likely

In Canada, what is the likelihood of snow in May?

• Unlikely

• Impossible

• Certain

• Equally likely

After watching this video, what is the likelihood that you will answer probability questions?

• Impossible

• Unlikely

• Likely

• Certain

What does the term 'certain' mean on the number line?

• An event that will never happen

• An event that is equally likely to happen or not

• An event that will definitely happen

• An event that might happen