Frequency

Frequency, abbreviated as f or FREQ, is the number of times an alternating current reverses itself in one second.  Expressed in Hertz (Hz), which is one cycle per second.

Frequency Probability, is the rate of occurrence.

 

Frequency formula
\(\large{ f =   \frac { 1 } { T  } }\)
Symbol	English	Metric
\(\large{ f }\) = frequency	\(\large{Hz}\)	\(\large{s^{-1}}\)
\(\large{ T }\) = time period, the time required for one cycle or wave occillation	\(\large{sec}\)	\(\large{s}\)