# random

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## random

[ran´dum]pertaining to a chance-dependent process.

## ran·dom

(ran'dŏm),**1.**Governed by chance; used of a process in which the outcome is indeterminate but may assume any of a set of values (the domain) with probabilities specifiable in advance. Although the random process is widely used in probability theory, empiric justification for the term is more complicated. The minimum requirement is that repeated realization of the process will settle down to a stable distribution or, if not metric, a stable set of frequencies if the trait is classifiable only.

**2.**

[M.E.

*randon*, speed, errancy, fr. O. Fr.*randir*, to run, fr. Germanic]## random

/ran·dom/ (ran´dom) pertaining to a chance-dependent process, particularly one that occurs according to a known probability distribution.## random

Occurring by chance alone–ie, not by design, pattern, plan, or selection Clinical trials Referring to a formal chance process in which previous events have no bearing on future events. See Random allocation, Randomized trial.## ran·dom

(ran'dŏm)Governed by chance; denotes a process in which outcome is indeterminate.

[M.E.

*randon*, speed, errancy, fr. O. Fr.*randir*, to run, fr. Germanic]## random

unplanned, without direction or purpose.

**random assignment**

see randomization.

**random mating**

where each member of the population has an equal opportunity of mating with every member of the opposite sex.

**random numbers**

a list of numbers obtained by a standard randomization procedure; used commonly to select individual animals from a pack.

**random sample**

see random sample.

**random sampling**

a procedure for selecting units from a group in such a way that each unit has an equal chance of being selected in the sample.

**random selection**

selection in such a way as to produce a random sample.

**random variable**

a group or quantity that takes various values, each with varying probabilities.

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