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SAI International School
                                                    CLASS - VIII

               Mathematics
               CHAPTER-5: DATAHANDLING- 4

               Lesson Notes- 4



               SUBTOPIC :PROBABILITY


                     Probability: The chance of occurring of a certain event when
                       measured quantitatively.
                     Probability of an event =

                       Number of outcomes that makes an event/Total number of outcomes of the
                       experiment when the outcomes are equally likely.
                       (i)  Experiment: An operation which can produce some well-defined
                       outcomes.
                       (ii)  Trial: The performance of an experiment.
                       (iii)  Random Experiment: An experiment in which all possible
                       outcomes are known and the exact outcome cannot be predicted in
                       advance.
                       (iv)  Equally Likely Outcomes: Certain experiments whose
                       outcomes have an equal chance of occurring.
                       (v)  Event: Each outcome of an experiment or a collection of
                       outcomes is called an event.

                     Chances and probability are related to our real life.




























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