random

random access

direct access.

random access memory

See RAM.

random number

n.

1. a number selected randomly.

2. also, pseudo-random number. a number generated by a mathematical process (a random number generator) that simulates the essential qualities of a random number.

random sample

n.
a sample whose observations are drawn randomly from a population. In statistics, a random sample can be studied to measure qualities of the population it is drawn from.