Experiment: Any activity or trial
performed is an experiment.
e.g. 1)
Tossing of coin
2)
Rolling of dice
3)
Falling of rain
· Outcomes:
The results of the activity are called outcomes.
e. g.
out comes for above experiments are
1)
Head, Tail
2)
3)
It will rain, It will not rain.
· Probability
of happening of event
If total no. of trials = n
If
no. of times event occurred
Then
· Probability
always lies between and v.
·
· If are the possible outcomes of an experiments, then sum of
probabilities of each event is .
i.e
e.g.
For an experiment rolling a dice
The possible out comes = Numbers
- So let event getting on die, getting 2 on die and so on.
Then