1. ©G Dear 2009 – Not to be sold/Free to use
Language
of Chance
General Mathematics
Preliminary
Informal
Description
Stage 6 - Year 11
Press Ctrl-A
©G Dear 2009 – Not to be sold/Free to use

2. Informal Description of Chance (1/2)
1 Certain
The Sun rising tomorrow
Probability can be described in words
Almost Certain
or numbers.
Likely
Eg. 8 chances out of 9 can be described as …
1 Fifty
2 Fifty
Flipping a coin and getting a Head.
Almost Certain or
Rolling 2 with dice.
Unlikely 8 9
P(E) =
Very Unlikely
0 Impossible

3. Deck of Cards (2/2) A picture Card is ‘Unlikely’ A Red Card is ’50/50’
A Spot Card is
‘Likely’