Frequency

Topics: Probability

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(definition)

In the frequentist approach of probability, for $A$ an event and an experiment that is carried out $n$ times, we define its frequency as:

$$f^n(A)=\frac{n(A)}{n}$$

…where $n(A)$ denotes the number of times that $A$ occurs.

Properties §

Note that:

• $f^n(A)\in [0,1]$
• $f^n(\Omega )=1$
• $f^n(A\cup B)=f^n(A)+f^n(B)$