Home›Browse›Contrast🌐EnglishEnglishDeutschFrançaisPolskiفارسیEntityQ5165754· pop 5· linked from 67 articlesContrastSign in to savecombination of averages whose coefficients add up to zero, or the difference between two meansAvailable in 5 languagesFrançaisDeutschPolskiفارسیvia Wikidata sitelinks · CC0