Examples include tossing a coin, playing the lottery, driving a car, taking an exam......

*Interpretations of Probability*

- 1.
- Long term frequency, as in the limit of the number of 6's that appear in many tosses of a fair dice.
- 2.
- Measure of belief:

P(I survive surgical operation)

This experiment cannot be repeated, the only interpretation would be that of a measure of belief.Beware:

Our first intuitive ideas about probability can be fraught with fallacies, in that they sometimes do not obey the axioms they should.