{"id":5053,"date":"2023-07-04T12:40:30","date_gmt":"2023-07-04T12:40:30","guid":{"rendered":"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/"},"modified":"2023-07-04T12:40:30","modified_gmt":"2023-07-04T12:40:30","slug":"padrao-de-confianca-do-excel","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/","title":{"rendered":"Como usar a fun\u00e7\u00e3o confidence.norm no excel (com exemplo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a fun\u00e7\u00e3o <strong>CONFIDENCE.NORM<\/strong> no Excel para calcular a meia largura de um intervalo de confian\u00e7a para uma m\u00e9dia populacional.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Esta fun\u00e7\u00e3o usa a seguinte sintaxe:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>CONFIAN\u00c7A.NORM(alfa, standard_dev, tamanho)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>alfa<\/strong> : O n\u00edvel de signific\u00e2ncia a ser usado (por exemplo, para um intervalo de confian\u00e7a de 95%, voc\u00ea usaria 0,05)<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>standard_dev<\/strong> : O desvio padr\u00e3o da popula\u00e7\u00e3o, considerado conhecido<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>tamanho<\/strong> : o tamanho da amostra<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar esta fun\u00e7\u00e3o na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo: Como usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que queiramos calcular um intervalo de confian\u00e7a de 95% para a altura m\u00e9dia de uma determinada esp\u00e9cie de planta.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Suponha que coletamos uma amostra aleat\u00f3ria simples de <strong>50<\/strong> plantas individuais e descobrimos que a altura m\u00e9dia da amostra \u00e9 de <strong>14,5<\/strong> polegadas.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Suponha que tamb\u00e9m saibamos que o desvio padr\u00e3o (\u03c3) da altura da popula\u00e7\u00e3o entre esta esp\u00e9cie de planta \u00e9 de <strong>3,1<\/strong> polegadas.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Podemos digitar a seguinte f\u00f3rmula em uma c\u00e9lula do Excel para calcular a meia largura desse intervalo de confian\u00e7a de 95%:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 17px;\"> <strong>=CONFIDENCE.NORM(0.05, 3.1, 50)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">A captura de tela a seguir mostra como usar esta f\u00f3rmula na pr\u00e1tica:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-39388 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/confnorm1.png\" alt=\"\" width=\"471\" height=\"333\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">A meia largura deste intervalo de confian\u00e7a de 95% \u00e9 <strong>0,85926<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Para realmente construir o intervalo de confian\u00e7a, precisamos adicionar e subtrair esse valor da m\u00e9dia amostral.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Portanto, o intervalo de confian\u00e7a de 95% para a altura m\u00e9dia desta esp\u00e9cie de planta espec\u00edfica \u00e9:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Intervalo de confian\u00e7a de 95%: 14,5 \u00b1 0,85926<\/span><\/li>\n<li> <span style=\"color: #000000;\">Intervalo de confian\u00e7a de 95%: (13,64074, 15,35926)<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">O intervalo de confian\u00e7a de 95% para a altura m\u00e9dia est\u00e1 entre <strong>13,64074 polegadas<\/strong> e <strong>15,35926 polegadas<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Curiosamente, quanto maior o n\u00edvel de confian\u00e7a, maior ser\u00e1 o intervalo de confian\u00e7a.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, se quis\u00e9ssemos calcular um intervalo de confian\u00e7a de 99%, usar\u00edamos alfa = 0,01 para o primeiro argumento da fun\u00e7\u00e3o <strong>CONFIDENCE.NORM<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 17px;\"> <strong>=CONFIDENCE.NORM(0.01, 3.1, 50)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">A captura de tela a seguir mostra como usar esta f\u00f3rmula na pr\u00e1tica:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-39389 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/confnorm2.png\" alt=\"\" width=\"477\" height=\"348\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">A meia largura deste intervalo de confian\u00e7a de 99% \u00e9 <strong>1,12926<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Portanto, o intervalo de confian\u00e7a de 99% para a altura m\u00e9dia desta esp\u00e9cie de planta espec\u00edfica \u00e9:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Intervalo de confian\u00e7a de 99%: 14,5 \u00b1 1,12926<\/span><\/li>\n<li> <span style=\"color: #000000;\">Intervalo de confian\u00e7a de 99%: (13,37074, 15,62926)<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Observe que esse intervalo de confian\u00e7a \u00e9 maior que o intervalo de confian\u00e7a de 95%.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como realizar outras opera\u00e7\u00f5es comuns no Excel:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/pt\/intervalo-de-confianca-para-coeficiente-de-regressao-no-excel\/\" target=\"_blank\" rel=\"noopener\">Como calcular o intervalo de confian\u00e7a para o coeficiente de regress\u00e3o no Excel<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/tracar-intervalo-de-confianca-excel\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar intervalos de confian\u00e7a no Excel<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/teste-de-hipotese-do-excel\/\" target=\"_blank\" rel=\"noopener\">Como realizar testes de hip\u00f3teses no Excel<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel para calcular a meia largura de um intervalo de confian\u00e7a para uma m\u00e9dia populacional. Esta fun\u00e7\u00e3o usa a seguinte sintaxe: CONFIAN\u00c7A.NORM(alfa, standard_dev, tamanho) Ouro: alfa : O n\u00edvel de signific\u00e2ncia a ser usado (por exemplo, para um intervalo de confian\u00e7a de 95%, voc\u00ea usaria 0,05) standard_dev : [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-5053","post","type-post","status-publish","format-standard","hentry","category-guia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Como usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel (com exemplo) - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel, com um exemplo.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel (com exemplo) - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel, com um exemplo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-04T12:40:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/confnorm1.png\" \/>\n<meta name=\"author\" content=\"Dr. benjamim anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr. benjamim anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/\",\"url\":\"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/\",\"name\":\"Como usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel (com exemplo) - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-04T12:40:30+00:00\",\"dateModified\":\"2023-07-04T12:40:30+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar a fun\u00e7\u00e3o CONFIDENCE.NORM no Excel, com um exemplo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/padrao-de-confianca-do-excel\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar a fun\u00e7\u00e3o confidence.norm no excel (com exemplo)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pt\/#website\",\"url\":\"https:\/\/statorials.org\/pt\/\",\"name\":\"Statorials\",\"description\":\"O seu guia para a literacia estat\u00edstica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pt\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\",\"name\":\"Dr. benjamim anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr. benjamim anderson\"},\"description\":\"Ol\u00e1, sou Benjamin, um professor aposentado de estat\u00edstica que se tornou professor dedicado na Statorials. 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