frequency
in statistics, the number of times a particular event occurs or a particular statement is true in an experiment, study, or data set
co-occurrence
linguistic term for frequency of occurrence of two terms alongside each other in a certain order
relative frequency
ratio of the number of outcomes in which a specified event occurs to the total number of trials
cumulative frequency
valid frequency
failure rate
frequency with which an engineered system or component fails
frequency class
statistical measure of the usage frequency of a word in a natural language or in a language section
unique user
metric of website visitation
allele frequency
relative frequency of a variant of a gene at a particular locus in a population
letter frequency
how often each letter appears on average in a written language