General Mathematics
Preliminary
Informal
Description
Stage 6 - Year 11
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©G Dear 2009 – Not to be sold/Free to use
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Informal Description of Chance (1/2)
1 Certain The Sun rising tomorrow
Probability can
Almost Certain
be
described in words
or numbers.
Likely
1 Fifty
2 Fifty
Eg. 8 chances out of 9
described as …
Flipping a coin and
can be
getting a Head.
Rolling 2
Unlikely with dice.
Very Unlikely
0 Impossible
Almost Certain
or
8
P(E) =
9
2
Deck of Cards (2/2)
A picture Card is ‘Unlikely’
A Red Card is ’50/50’
A Spot Card is ‘Likely’
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