無作為抽出

むさくいちゅうしゅつ

noun

•

random sampling

無	nothingness, none, ain't, nothing, nil, not
作	make, production, prepare, build
為	do, change, make, benefit, welfare, be of use, reach to, try, practice, cost, serve as, good, advantage, as a result of
抽	pluck, pull, extract, excel
出	exit, leave, go out, come out, put out, protrude