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Probability calculator evaluates the probability of occurring events out of total number of possible outcomes. This event probability calculator finds single-event probability. For example; a coin is tossed 90 times and we have to calculate the chances of occurring head in the 1st five times.
Probability is simply how likely something is to happen. It is the outcome of a random event i.e. if we toss a coin we cannot say what will be the result whether it will be head or tail until the event happens. The probability ranges between 0 and 1.
If the probability of an event is 0.6 then it means there is a 60% chance of happening that event. The probability theory contains some sub-terms in it, to understand the concept of probability first we have to go through these basic terms.
The general formula to calculate the single event probability is as follows:
Probability = number of events occurred n(E) / number of possible outcomes n(T)
We can calculate the probability of a sample space by following the below steps.
To understand the method more precisely, have a look at the following examples.
Example 1:
A fair die is rolled one time, what are the chances of coming the face 6?
Solution:
Step 1: Check the number of all possible outcomes n(T)
A die has six faces so n(T) = 6
Step 2: Find out the number of events that occurred n(E)
The die is rolled one time so n(E) = 1
Step 3: Calculation
Probability = n(E) / n(T)
Probability = 1/6
Probability = 0.1667
Probability = 16.67%
Criticalvaluecalculator.com is a free online service for students, researchers, and statisticians to find the critical values of t and z for right-tailed, left tailed, and two-tailed probability.
