{"id":6779,"date":"2025-07-15T13:34:48","date_gmt":"2025-07-15T13:34:48","guid":{"rendered":"https:\/\/functiontranslator.com\/ecartype\/"},"modified":"2021-02-26T08:14:07","modified_gmt":"2021-02-26T08:14:07","slug":"stdev","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/fr\/stdev\/","title":{"rendered":"ECARTYPE"},"content":{"rendered":"

La fonction STDEV<\/strong> dans Microsoft Excel et ECARTYPE<\/strong> dans Google Sheets est utilis\u00e9e pour calculer l’\u00e9cart-type d’un ensemble de valeurs, une mesure qui exprime la dispersion des donn\u00e9es autour de leur moyenne. Un \u00e9cart-type \u00e9lev\u00e9 indique une plus grande variabilit\u00e9 des donn\u00e9es.<\/p>\n

Syntaxe et exemples<\/h2>\n

Dans Microsoft Excel, la syntaxe de la fonction STDEV est :<\/p>\n

=STDEV(nombre1, [nombre2], ...)<\/code><\/pre>\n
Pour Google Sheets, la fonction ECARTYPE pr\u00e9sente une syntaxe similaire :<\/p>\n
=ECARTYPE(nombre1, [nombre2], ...)<\/code><\/pre>\n
Exemple :<\/strong><\/p>\n
    \n
  • Si vous disposiez des scores suivants pour un test : 85, 90, 88, 93 et 87.<\/li>\n
  • Dans Excel, la formule serait : =STDEV(85, 90, 88, 93, 87)<\/code><\/li>\n
  • Pour Google Sheets, cela serait : =ECARTYPE(85, 90, 88, 93, 87)<\/code><\/li>\n<\/ul>\n
    Dans les deux cas, la fonction calculera l’\u00e9cart-type pour donner une \u00e9valuation de la coh\u00e9rence des notes.<\/p>\n
    Applications concr\u00e8tes de cette fonction<\/h2>\n
    Sc\u00e9nario 1 : \u00c9valuation de la stabilit\u00e9 des ventes<\/strong><\/p>\n
    Imaginez un analyste de donn\u00e9es devant \u00e9valuer la r\u00e9gularit\u00e9 des ventes d’une entreprise sur cinq ans, avec des chiffres annuels (en milliers) comme suit : 320, 285, 340, 310, 295.<\/p>\n
    Syntaxe dans Excel : =STDEV(320, 285, 340, 310, 295) Syntaxe dans Google Sheets : =ECARTYPE(320, 285, 340, 310, 295)<\/code><\/pre>\n
    Ce calcul d\u2019\u00e9cart-type offre une perspective sur la variabilit\u00e9 des ventes d’une ann\u00e9e \u00e0 l’autre, essentielle pour la planification et l’\u00e9valuation des risques futurs.<\/p>\n
    Sc\u00e9nario 2 : Analyse de la dispersion des notes d’un examen<\/strong><\/p>\n
    Un professeur pourrait vouloir examiner la dispersion des scores d’un examen pour 10 \u00e9l\u00e8ves : 55, 60, 86, 70, 75, 90, 68, 84, 77, et 73.<\/p>\n
    Syntaxe dans Excel : =STDEV(55, 60, 86, 70, 75, 90, 68, 84, 77, 73) Syntaxe dans Google Sheets : =ECARTYPE(55, 60, 86, 70, 75, 90, 68, 84, 77, 73)<\/code><\/pre>\n
    L’\u00e9cart-type, dans ce cas, permet au professeur d’appr\u00e9cier la dispersion des notes autour de la moyenne de la classe, r\u00e9v\u00e9lant ainsi les \u00e9ventuelles difficult\u00e9s ou r\u00e9ussites exceptionnelles n\u00e9cessitant une attention particuli\u00e8re.<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u00c9value l\u2019\u00c9cart type d\u2019une population en se basant sur un \u00c9chantillon de cette population<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[317],"tags":[],"class_list":["post-6779","post","type-post","status-publish","format-standard","hentry","category-compatibilite"],"acf":[],"yoast_head":"\nFonction STDEV (ECARTYPE) dans Excel : comment \u00e7a marche, exemples et syntaxe<\/title>\n<meta name=\"description\" content=\"Pr\u00e9sentation de la fonction STDEV (ECARTYPE) d\u2019Excel et Google Sheets. 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