Certain Event
This article covers meaning & overview of Certain Event from statistical perspective.
What is Certain Event?
An event is said to be a Certain Event if there is an absolute surety on the chance of its occurrence.
The probability of certain event is said to be 1. In other words, a certain event contains all the elements of the sample space.
Consider the above figure in which A is the sample space. B and C are the events in the sample space A.
Let,
A = Set of all even natural numbers less than 16 = {2,4,6,8,10,12,14}
B = Set of all even natural numbers less than 10 = {2,4,6,8}
C = Set of all whole numbers between 0 and 16, excluding the end values = {2,4,6,8,10,12,14}
The elements of both event A and C are identical. Thus C is said to be the certain event of A.
Some other examples of certain events are:
- If today is a Tuesday, the probability of yesterday being a Monday is 1.
- If Chetan is of 24 years old, the probability of he turning 25 on his next birthday is 25.
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