What kind of probability is being used when one calculates the probability that a randomly selected adult who works from home and has a bachelor's degree or higher?

The kind of probability is being used when one calculates the probability that a randomly selected adult who works from home and has a bachelor's degree or higher is relative frequency. This probability is based on actual measurements, like a survey. Using this method will enable us to calculate for the probability of each variable occurring, or a combination of two or more variables with respect to the number of trials in the sample.