Probability Line

1
Probability
2
Probability
Events
In the language of probability, something that
could or has happened is called an event. The
following are all events
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Probability
Events
If it is impossible for an event to happen then
it is given a value of 0 on the start of the
probability line. If an event is certain to
happen then it is given a value of 1 at the end
of the probability line.
The probability of most events happening lie
between these two extremes and could be described
as having an even chance, a poor chance or a good
chance.
good chance
even chance
poor chance
Describe the probability of each of the following
events happening.
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Probability
Outcomes
The probability of an event happening can be
located accurately on the probability line if we
know all of the possible outcomes that can occur.

Listing Outcomes
Make a list of all possible outcomes for the
following events. The outcomes for these events
are equally likely.
Blue, red, yellow, green, white
1, 2, 3, 4, 5, 6
Head, Tail
Five outcomes
Six outcomes
Two outcomes
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Probability
Outcomes
The probability of an event happening can be
located accurately on the probability line if we
know all of the possible outcomes that can occur.

Listing Outcomes
How many possible outcomes are there when you
choose a card from a pack?
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Probability
Outcomes
The probability of an event happening can be
located accurately on the probability line if we
know all of the possible outcomes that can occur.

Listing Outcomes
Make a list of all possible outcomes for a set of
dominoes.
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Probability
Where would you place the following events on the
probability line?