🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPortuguêsSvenskaTürkçeРусскийالعربيةفارسیไทย한국어中文日本語EntityQ284172· pop 24· linked from 475 articlesselection biasselection of individuals, groups or data for analysis such that proper randomization is not achievedAvailable in 24 languagesEspañolFrançaisDeutschРусскийPortuguêsItalianoالعربيةBahasa IndonesiaBalineseBasqueConnectionsprevalenceEntitysamplingEntityCategoriesCausal inferenceExperimental biasSampling (statistics)Scientific method