Relative frequency is a term used in probability theory and statistics to describe the ratio of the number of outcomes in which a specified event occurs to the total number of trials. It is also known as empirical probability or experimental probability. Relative frequency is an experimental probability, not a theoretical one, and can vary when experiments are repeated.
To calculate relative frequency, we need to divide the frequency count for a subgroup of the population by the total count. For example, if 8 out of 20 students travel to school by car, then the frequency for traveling to school by car would be 8, and the relative frequency would be 8/20 = 0.4 or 40% .
Relative frequency is often used to estimate probabilities from experience and observation. It is an estimator or estimate of a probability. In statistical terms, the empirical probability is an estimator or estimate of a probability.
In summary, relative frequency is a way to measure how often a particular event occurs against total occurrences. It is an experimental probability that can be used to estimate probabilities from experience and observation.
