{"id":946,"date":"2025-07-04T14:12:07","date_gmt":"2025-07-04T14:12:07","guid":{"rendered":"https:\/\/studenthub.elsevier.com\/fr\/?p=946"},"modified":"2025-07-24T06:35:14","modified_gmt":"2025-07-24T06:35:14","slug":"quelle-est-la-difference-entre-lecart-type-et-lerreur-type","status":"publish","type":"post","link":"https:\/\/studenthub.elsevier.com\/fr\/question-bank\/quelle-est-la-difference-entre-lecart-type-et-lerreur-type\/","title":{"rendered":"Quelle est la diff\u00e9rence entre l&#8217;\u00e9cart-type et l&#8217;erreur-type\u00a0?"},"content":{"rendered":"\n<p>Si les donn\u00e9es suivent une distribution normale, il convient de d\u00e9crire la variabilit\u00e9, une mesure de la dispersion des donn\u00e9es \u00e0 partir de la moyenne.<\/p>\n\n\n\n        <div class=\"simple-quiz\" id=\"sqt_1_7234_container\">\n            \n            <div class=\"quiz-options\">\n                                    <div class=\"quiz-option\">\n                        <input type=\"radio\" \n                               id=\"sqt_1_7234_option_1\" \n                               name=\"sqt_1_7234_options\" \n                               value=\"1\">\n                        <label for=\"sqt_1_7234_option_1\">\n                            A. L&#039;\u00e9cart-type et l&#039;erreur-type sont la m\u00eame chose                        <\/label>\n                    <\/div>\n                                    <div class=\"quiz-option\">\n                        <input type=\"radio\" \n                               id=\"sqt_1_7234_option_2\" \n                               name=\"sqt_1_7234_options\" \n                               value=\"2\">\n                        <label for=\"sqt_1_7234_option_2\">\n                            B. L&#039;\u00e9cart-type est une expression de la m\u00e9diane par rapport \u00e0 la moyenne, alors que l&#039;erreur-type est une expression du mode par rapport \u00e0 la moyenne                        <\/label>\n                    <\/div>\n                                    <div class=\"quiz-option\">\n                        <input type=\"radio\" \n                               id=\"sqt_1_7234_option_3\" \n                               name=\"sqt_1_7234_options\" \n                               value=\"3\">\n                        <label for=\"sqt_1_7234_option_3\">\n                            C. L&#039;\u00e9cart-type est la plage dans laquelle nous pouvons avoir une confiance de 95 % que la moyenne de l&#039;\u00e9chantillon se situe, alors que l&#039;erreur-type est la plage dans laquelle nous pouvons avoir une confiance de 95 % que la vraie moyenne de l&#039;\u00e9chantillon se situe.                        <\/label>\n                    <\/div>\n                                    <div class=\"quiz-option\">\n                        <input type=\"radio\" \n                               id=\"sqt_1_7234_option_4\" \n                               name=\"sqt_1_7234_options\" \n                               value=\"4\">\n                        <label for=\"sqt_1_7234_option_4\">\n                            D. L&#039;\u00e9cart-type correspond \u00e0 l&#039;\u00e9talement des donn\u00e9es sur la moyenne de l&#039;\u00e9chantillon, alors que l&#039;erreur-type est une mesure de la fiabilit\u00e9 de cet \u00e9cart-type                        <\/label>\n                    <\/div>\n                                    <div class=\"quiz-option\">\n                        <input type=\"radio\" \n                               id=\"sqt_1_7234_option_5\" \n                               name=\"sqt_1_7234_options\" \n                               value=\"5\">\n                        <label for=\"sqt_1_7234_option_5\">\n                            E. L&#039;\u00e9cart-type correspond \u00e0 la dispersion des donn\u00e9es par rapport \u00e0 la moyenne de l&#039;\u00e9chantillon, alors que l&#039;erreur-type correspond \u00e0 la dispersion de la synth\u00e8se des donn\u00e9es de la moyenne de l&#039;\u00e9chantillon si des donn\u00e9es provenant d&#039;une grande s\u00e9rie d&#039;\u00e9chantillons sont disponibles.                        <\/label>\n                    <\/div>\n                            <\/div>\n            \n            <div class=\"quiz-toggle\">\n                <span class=\"quiz-cta\" \n                      role=\"button\" \n                      tabindex=\"0\" \n                      onclick=\"simpleQuizToggleResults('sqt_1_7234')\"\n                      onkeydown=\"if(event.key === 'Enter' || event.key === ' ') { simpleQuizToggleResults('sqt_1_7234'); event.preventDefault(); }\">\n                    V\u00e9rifier la r\u00e9ponse                <\/span>\n                \n                <div id=\"sqt_1_7234_results\" class=\"quiz-results\" aria-live=\"polite\">\n                    E. L&#039;\u00e9cart-type correspond \u00e0 la dispersion des donn\u00e9es par rapport \u00e0 la moyenne de l&#039;\u00e9chantillon, alors que l&#039;erreur-type correspond \u00e0 la dispersion de la synth\u00e8se des donn\u00e9es de la moyenne de l&#039;\u00e9chantillon si des donn\u00e9es provenant d&#039;une grande s\u00e9rie d&#039;\u00e9chantillons sont disponibles. Cet \u00e9cart-type se rapporte \u00e0 l&#039;\u00e9talement d&#039;une synth\u00e8se (moyenne) des donn\u00e9es d&#039;un \u00e9chantillon. Si un nombre infini d&#039;\u00e9chantillons \u00e9taient pr\u00e9lev\u00e9s dans la m\u00eame population, les moyennes des \u00e9chantillons sont susceptibles de suivre une distribution normale. L&#039;\u00e9talement de la moyenne de l&#039;\u00e9chantillon est connu sous le nom d&#039;erreur-type (ET).                <\/div>\n            <\/div>\n            \n        <\/div>\n        \n","protected":false},"excerpt":{"rendered":"<p>Si les donn\u00e9es suivent une distribution normale, il convient de d\u00e9crire la variabilit\u00e9, une mesure de la dispersion des donn\u00e9es \u00e0 partir de la moyenne.<\/p>\n","protected":false},"author":168,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"wp-custom-template-question-bank-individual-entry","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4,12],"tags":[],"class_list":["post-946","post","type-post","status-publish","format-standard","hentry","category-question-bank","category-biostatics-epidemiology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Quelle est la diff\u00e9rence entre l&#039;\u00e9cart-type et l&#039;erreur-type\u00a0? 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