The probability is defined as the chance of occurring an event. Probability can be classified as theoretical probability and empirical probability. The empirical probability is based on historical data. Check the definition, formula, pros and pros and cons of empirical probability in the following sections.

## What is Empirical Probability?

Empirical probability is defined as the estimator of probability that depends on experiences and observations. Its advantage is the procedure that is considered free of assumptions that means no data is assumed. It is also known as a relative frequency or objective probability. Empirical probability is the number of outcomes in which a specified event occurs to the total number of trials.

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### Empirical Probability Formula

The empirical probability of an event depends on what happened. On the other hand, theoretical probability an event predicts what will happen on the basis of the total number of possible outcomes. Empirical probability is the ratio of the number of trials in which an event occurred to the total number of trials.

The empirical probability of the occurrence of an event E formula is here.

P(E) = $$\frac { Number of trials in which event occurred }{ Total number of trials }$$

### Pros and Cons of Empirical Probability

• The empirical probability is used to estimate the probability.

• Empirical probability gives results pointing to estimating probabilities that are either very close to 0 or very close to 1.
• It requires large sample sizes to predict probabilities to a fair degree or accuracy.

### Solved Problems on Empirical Probability

Problem 1:
In a buffet, 90 out of 100 people chose to order coffee over tea. What is the empirical probability of someone ordering coffee?

Solution:
Given that,
Total number of people = 3
The number of people who choose coffee or tea = 90.
Number of people who choosing coffee or tea = 100 – 90 = 10
As per empirical probability formula, it is = 10 / 100 = 0.10.
Therefore, the empirical probability of someone ordering coffee is 0.10 or 10%.

Problem 2:
A coin toss three times and the result was three heads. Using the empirical probability formula find out what is the empirical probability of getting a head?

Solution:
Given that,
Total number of trials = 3
Empirical probability = 3 / 3 = 1.
Therefore, the empirical probability of getting a head is 1 or 100%.