無む作さく為い抽ちゅう出しゅつ

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Meanings

1

noun

statistics

Technical term in statistics for selecting a sample from a population such that every member has an equal chance of being chosen.

無む作さく為い
無作為 means 'random' or 'without purpose', while 無作為抽出 specifically refers to the statistical method of random sampling.
抽ちゅう出しゅつ
抽出 means 'extraction' or 'sampling' in a general sense; 無作為抽出 narrows it to random sampling.

Compound of 無作為 (random) and 抽出 (sampling, extraction).