{"id":6778,"date":"2025-07-15T13:34:48","date_gmt":"2025-07-15T13:34:48","guid":{"rendered":"https:\/\/functiontranslator.com\/centree-reduite\/"},"modified":"2021-02-26T08:14:05","modified_gmt":"2021-02-26T08:14:05","slug":"standardize","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/fr\/standardize\/","title":{"rendered":"CENTREE.REDUITE"},"content":{"rendered":"<h2>Description et Syntaxe<\/h2>\n<p>La fonction <code>STANDARDIZE<\/code>, appel\u00e9e <code>CENTREE.REDUITE<\/code> en fran\u00e7ais, standardise une valeur en la convertissant en score z en utilisant la moyenne et l&rsquo;\u00e9cart-type d&rsquo;un ensemble de donn\u00e9es. Ces scores z, \u00e9galement connus sous le nom de valeurs normalis\u00e9es, sont essentiels pour les analyses statistiques, notamment pour la comparaison de donn\u00e9es provenant de diff\u00e9rents ensembles.<\/p>\n<p><b>Syntaxe de la fonction :<\/b><\/p>\n<pre><code>STANDARDIZE(x, moyenne, \u00e9cart_type)<\/code><\/pre>\n<ul>\n<li><b>x<\/b> : la valeur \u00e0 standardiser.<\/li>\n<li><b>moyenne<\/b> : la moyenne de l&rsquo;ensemble de donn\u00e9es.<\/li>\n<li><b>\u00e9cart_type<\/b> : l&rsquo;\u00e9cart-type de l&rsquo;ensemble de donn\u00e9es.<\/li>\n<\/ul>\n<h2>Exemples Pratiques<\/h2>\n<p>Voici quelques exemples d\u00e9montrant l&rsquo;utilisation de la fonction <code>CENTREE.REDUITE<\/code> dans Excel et Google Sheets.<\/p>\n<h2>Exemple 1 : Comparaison de r\u00e9sultats scolaires<\/h2>\n<p>Imaginez que vous disposiez des r\u00e9sultats des examens de deux classes diff\u00e9rentes. Pour comparer objectivement les performances des \u00e9tudiants, vous pouvez recourir \u00e0 la standardisation.<\/p>\n<ul>\n<li>Les r\u00e9sultats de la classe A ont une moyenne de 68 et un \u00e9cart-type de 10.<\/li>\n<li>Les r\u00e9sultats de la classe B ont une moyenne de 75 et un \u00e9cart-type de 15.<\/li>\n<li>Supposons que Paul de la classe A a obtenu 75, et Jean de la classe B a obtenu 80.<\/li>\n<\/ul>\n<p>Calculons les scores Z :<\/p>\n<pre><code>Score Z de Paul = CENTREE.REDUITE(75, 68, 10) = (75 - 68) \/ 10 = 0.7 Score Z de Jean = CENTREE.REDUITE(80, 75, 15) = (80 - 75) \/ 15 = 0.33<\/code><\/pre>\n<p>Commentaires :<\/p>\n<p>Paul obtient un score Z sup\u00e9rieur \u00e0 celui de Jean, ce qui indique que ses r\u00e9sultats sont meilleurs par rapport aux siens, en tenant compte du contexte de sa classe.<\/p>\n<h2>Exemple 2 : Analyse des donn\u00e9es biom\u00e9triques<\/h2>\n<p>Supposons que vous travaillez pour une compagnie d&rsquo;assurance analysant les risques de sant\u00e9 bas\u00e9s sur des crit\u00e8res de poids. Les donn\u00e9es recueillies affichent une moyenne de 70 kg avec un \u00e9cart-type de 8 kg.<\/p>\n<p>Calcul de la standardisation pour un poids de 90 kg :<\/p>\n<pre><code>Score Z = CENTREE.REDUITE(90, 70, 8) = (90 - 70) \/ 8 = 2.5<\/code><\/pre>\n<p>Commentaires :<\/p>\n<p>Un score Z de 2.5 signifie que le poids de l&rsquo;individu est nettement sup\u00e9rieur \u00e0 la moyenne, ce qui peut indiquer un risque accru pour certaines maladies li\u00e9es au surpoids et influencer l&rsquo;\u00e9valuation des primes d&rsquo;assurance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Renvoie une valeuR centR\u00e9e R\u00e9duite<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[315],"tags":[],"class_list":["post-6778","post","type-post","status-publish","format-standard","hentry","category-statistiques"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Fonction STANDARDIZE (CENTREE.REDUITE) dans Excel : comment \u00e7a marche, exemples et syntaxe<\/title>\n<meta name=\"description\" content=\"Pr\u00e9sentation de la fonction STANDARDIZE (CENTREE.REDUITE) d\u2019Excel et Google Sheets. 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