lacking a definite plan, purpose, or pattern
marked by absence of bias
of or denotingrelating to, having, or being statistical elements or events with an ungoverned or unpredictable outcome, but with definite probability of occurrence
of or denotingbeing or relating to a statistical sample drawn from a population each member of which has equal probability of occurring in the sample
characterized by procedures designed to obtain such samples
randomly adv
randomness noun
[Middle English, in the sense ‘impetuosity, rush’, from Old French randon great speed, from randir to run, of Germanic origin]