random

知らない人、赤の他人

くだけた言い方で、知らない人や特に重要と思わない人。

やさしい英語で： A person you do not know or consider important.

• Some random sent me a message.
• The party was full of randoms.
• Why did you give our address to a total random?

類義語： stranger, nobody

よく使う表現： some random, a total random, random from somewhere

無作為の、でたらめな

はっきりした計画や目的、規則性なく選ばれたり並べられたりした。

やさしい英語で： Chosen or arranged without a clear plan, purpose, or pattern.

• The names are in random order.
• She picked a random book from the shelf.
• He wrote down random words as they came to him.

類義語： arbitrary, haphazard

反対語： systematic

よく使う表現： random order, random choice, random words

偶発的な、予測できない

はっきりした理由や予測できる規則性がなく起こること。

やさしい英語で： Happening without an obvious reason or predictable pattern.

• We heard random noises upstairs.
• The city has suffered several random attacks.
• A random encounter changed her plans for the day.

類義語： haphazard, unpredictable

反対語： predictable

よく使う表現： random act, random attack, random event

無作為の、ランダムな

どの選択肢も同じ確率で選ばれるように、偶然に任せて選んだ。

やさしい英語で： Chosen by chance, with every possible choice equally likely.

• We chose a random sample of students.
• A random draw decided who went first.
• The computer makes a random selection from all eligible names.

反対語： nonrandom

よく使う表現： random sample, random selection, random draw

確率的な、ランダムな

結果が確定せず、起こる可能性を数学的な確率で表せること。

やさしい英語で： Having an uncertain result that can be described using mathematical chances.

• The model includes a random variable.
• We studied random processes in our statistics class.
• Each experiment produces a random outcome with a known probability.

類義語： stochastic

反対語： deterministic

よく使う表現： random variable, random process, random outcome