What does randomized mean?
Randomized describes something that has been deliberately arranged or selected according to chance, rather than according to a fixed system or predictable order. It is especially common in academic and technical language, where randomized trials, randomized assignments, and randomized algorithms help prevent bias and make comparisons more reliable. As an adjective, randomized can describe an already completed arrangement, as in “a randomized sample.” As a verb, randomized is the past tense and past participle of randomize: researchers randomized the order of the trials, or the software randomly assigns each record a score. The word comes from random, which ultimately derives from the Old French rand, an uncertain or uncontrolled outcome. Although “randomized” is precise and formal, speakers often use the simpler expression “at random” in everyday contexts.
Arranged or determined by chance rather than by a fixed or systematic method.
"The study used a randomized order to present the questions."
Common in academic, scientific, statistical, and computing contexts.
To make something random or to arrange or select it by chance.
"The program randomizes the order of the playlist."
The past tense and past participle are both “randomized”; in everyday usage, “shuffled” may be clearer in informal contexts.
In a randomized clinical trial, chance becomes a tool for fairness: the random assignment helps keep known and unknown biases from favoring one group.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does randomized come from?
Randomized was formed in the 18th century from random and the suffix -ize, meaning “to make” or “to put into a specified condition.” Random itself comes through Old French from a Germanic word meaning “roving” or “swift,” originally describing a person who traveled widely and was therefore unpredictable. Its modern sense of “occurring without a definite pattern or method” developed over time. Related English forms include randomize, randomly, and randomness.
How randomized is actually used
In formal academic and technical contexts, randomized is commonly contrasted with systematic or controlled. In everyday speech, random or randomized by chance may sound more natural.
Easily confused with randomized
Random describes something determined by chance, whereas randomized describes a process or arrangement that has deliberately been made random.