- Outcome
The outcomes of the experiment are also known as sample points.
As the child is aware of the ideas of trial and event the idea of outcome may be
understood easily.
- Sample space
The set of all possible outcomes of a random experiment is known as the sample space
and is denoted by S.
Eg. : In rolling of a die, the possible outcomes are 1, 2, 3, 4, 5 and 6.
Therefore, sample space S = {1, 2, 3, 4, 5, 6}
The child must be clearly explained that the totality of all the outcomes is the sample
space.
- Equally likely events
Two or more events are said to be equally likely if each one of them has an equal
chance of happening.
Eg. : In tossing of an unbiased coin, getting head or tail are equally likely events.
- Exhaustive events
All possible outcomes of a random experiment are called as exhaustive events, also
known as sample space.
Eg. : In tossing of a coin the possible outcomes are head and tail.
S = {H, T}
Number of exhaustive events = 2
- Mutually exclusive events
Two or more events are said to be mutually exclusive if the happening of one of them
prevents the occurrence of all the other events in the same experiment.
