Probability

3. A compound event is a collection of two or more outcomes from the sample space of a chance experiment.
6. Sometimes it is difficult or impossible to calculate a theoretical probability, so an estimate can be found using a large number of trials. This is called the experimental probability. If the number of trials is large, the experimental probability should be very close to that of the theoretical.
7. the sample spaces is the set of all possible outcomes of an experiment. It is usually written inside braces, as shown in the example.
11. equally likely outcomes are two or more results that have the same chance of occurring
12. a chance experiment is an activity that may produce a variety of different results which occur randomly. The exmaple given is a single-step experiment
13. when an experiment is performed one or more times, each occurrence is called a trial. The example given indicates 50 trials of a single-step experiment
16. Outcomes are favourable if they are part of some desired event.

1. Probabilities can be expressed as fractions, decimals and percentages.
2. If all the outcomes in the sample space are divided into two events, they are complementary events.
4. Two or more events are mutually exclusive if they share no outcomes.
5. events Events are non-mutually exclusive if they share one or more outcomes. In the given example, the outcome 5 is shared.
8. the probability is 100%
9. If all the outcomes in the sample space are divided into two events, they are complementary events.
10. an outcome is one of the possible result chance experiment
14. The sum of the probabilities of all the outcomes of a chance experiment is 1 (or 100%)
15. an An event is either one outcome or a collection of outcomes. It is a subset of the sample space.