{"id":762,"date":"2023-07-28T20:25:05","date_gmt":"2023-07-28T20:25:05","guid":{"rendered":"https:\/\/statorials.org\/pt\/regressao-polinomial-excel\/"},"modified":"2023-07-28T20:25:05","modified_gmt":"2023-07-28T20:25:05","slug":"regressao-polinomial-excel","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/regressao-polinomial-excel\/","title":{"rendered":"Como realizar regress\u00e3o polinomial no excel"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">A an\u00e1lise de regress\u00e3o \u00e9 usada para quantificar a rela\u00e7\u00e3o entre uma ou mais vari\u00e1veis explicativas e uma <a href=\"https:\/\/statorials.org\/pt\/respostas-explicativas-das-variaveis\/\" target=\"_blank\" rel=\"noopener noreferrer\">vari\u00e1vel de resposta<\/a> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">O tipo mais comum de an\u00e1lise de regress\u00e3o \u00e9 <a href=\"https:\/\/statorials.org\/pt\/regressao-linear-1\/\" target=\"_blank\" rel=\"noopener noreferrer\">a regress\u00e3o linear simples<\/a> , usada quando uma vari\u00e1vel explicativa e uma vari\u00e1vel resposta t\u00eam uma rela\u00e7\u00e3o linear.<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8174 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel1.png\" alt=\"Rela\u00e7\u00e3o linear entre duas vari\u00e1veis\" width=\"475\" height=\"355\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">No entanto, por vezes a rela\u00e7\u00e3o entre uma vari\u00e1vel explicativa e uma vari\u00e1vel de resposta \u00e9 n\u00e3o linear.<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8175 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel2.png\" alt=\"Exemplo de relacionamento quadr\u00e1tico\" width=\"472\" height=\"357\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8176 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel3.png\" alt=\"Exemplo de rela\u00e7\u00e3o c\u00fabica\" width=\"473\" height=\"355\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Nestes casos, faz sentido utilizar <strong>a regress\u00e3o polinomial<\/strong> , que pode dar conta da rela\u00e7\u00e3o n\u00e3o linear entre as vari\u00e1veis.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Este tutorial explica como realizar regress\u00e3o polinomial no Excel.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo: Regress\u00e3o Polinomial no Excel<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que temos o seguinte conjunto de dados no Excel:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8178 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel4.png\" alt=\"Exemplo de conjunto de dados no Excel\" width=\"388\" height=\"348\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Conclua as etapas a seguir para ajustar uma equa\u00e7\u00e3o de regress\u00e3o polinomial a este conjunto de dados:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Etapa 1: crie um gr\u00e1fico de dispers\u00e3o.<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Primeiro, precisamos criar um gr\u00e1fico de dispers\u00e3o. V\u00e1 para o grupo <strong>Gr\u00e1ficos<\/strong> na guia <strong>Inserir<\/strong> e clique no primeiro tipo de gr\u00e1fico em <strong>Dispers\u00e3o<\/strong> :<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8179 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel5.png\" alt=\"Gr\u00e1fico de dispers\u00e3o no Excel\" width=\"658\" height=\"212\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Uma nuvem de pontos aparecer\u00e1 automaticamente:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8180 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel6.png\" alt=\"Relacionamento c\u00fabico em um gr\u00e1fico de dispers\u00e3o no exemplo do Excel\" width=\"583\" height=\"357\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><strong>Etapa 2: adicione uma linha de tend\u00eancia.<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">A seguir, precisamos adicionar uma linha de tend\u00eancia ao gr\u00e1fico de dispers\u00e3o. Para fazer isso, clique em um dos pontos individuais da nuvem de pontos. Em seguida, clique com o bot\u00e3o direito e selecione <strong>Adicionar linha de tend\u00eancia\u2026<\/strong><\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8181 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel7.png\" alt=\"Linha de tend\u00eancia para regress\u00e3o polinomial no Excel\" width=\"612\" height=\"354\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Uma nova janela aparecer\u00e1 com a op\u00e7\u00e3o de especificar uma linha de tend\u00eancia. Escolha <strong>Polinomial<\/strong> e escolha o n\u00famero que deseja usar para <strong>Order<\/strong> . Usaremos 3. Em seguida, marque a caixa na parte inferior que diz <strong>Mostrar equa\u00e7\u00e3o no gr\u00e1fico<\/strong> .<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8183 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel8.png\" alt=\"Linha de tend\u00eancia polinomial no Excel\" width=\"241\" height=\"513\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Uma linha de tend\u00eancia com uma equa\u00e7\u00e3o de regress\u00e3o polinomial aparecer\u00e1 automaticamente no gr\u00e1fico de dispers\u00e3o:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-8184 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel9.png\" alt=\"Regress\u00e3o Polinomial no Excel\" width=\"500\" height=\"297\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><strong>Etapa 3: interprete a equa\u00e7\u00e3o de regress\u00e3o.<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Para este exemplo espec\u00edfico, nossa equa\u00e7\u00e3o de regress\u00e3o polinomial ajustada \u00e9:<\/span><\/p>\n<p> <span style=\"color: #000000;\">y = -0,1265x <sup>3<\/sup> + 2,6482x <sup>2<\/sup> \u2013 14,238x + 37,213<\/span><\/p>\n<p> <span style=\"color: #000000;\">Esta equa\u00e7\u00e3o pode ser usada para encontrar o valor esperado da vari\u00e1vel resposta dado um determinado valor da vari\u00e1vel explicativa. Por exemplo, suponha que x = 4. O valor esperado para a vari\u00e1vel de resposta, y, seria:<\/span><\/p>\n<p> <span style=\"color: #000000;\">y = -0,1265(4) <sup>3<\/sup> + 2,6482(4) <sup>2<\/sup> \u2013 14,238(4) + 37,213 = <strong>14,5362<\/strong> .<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A an\u00e1lise de regress\u00e3o \u00e9 usada para quantificar a rela\u00e7\u00e3o entre uma ou mais vari\u00e1veis explicativas e uma vari\u00e1vel de resposta . O tipo mais comum de an\u00e1lise de regress\u00e3o \u00e9 a regress\u00e3o linear simples , usada quando uma vari\u00e1vel explicativa e uma vari\u00e1vel resposta t\u00eam uma rela\u00e7\u00e3o linear. No entanto, por vezes a rela\u00e7\u00e3o [&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-762","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 realizar regress\u00e3o polinomial no Excel - Estatologia<\/title>\n<meta name=\"description\" content=\"Uma explica\u00e7\u00e3o simples sobre como realizar regress\u00e3o polinomial no Excel, incluindo um exemplo passo a passo.\" \/>\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\/regressao-polinomial-excel\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como realizar regress\u00e3o polinomial no Excel - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Uma explica\u00e7\u00e3o simples sobre como realizar regress\u00e3o polinomial no Excel, incluindo um exemplo passo a passo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/regressao-polinomial-excel\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-28T20:25:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polynomeexcel1.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\/regressao-polinomial-excel\/\",\"url\":\"https:\/\/statorials.org\/pt\/regressao-polinomial-excel\/\",\"name\":\"Como realizar regress\u00e3o polinomial no Excel - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-28T20:25:05+00:00\",\"dateModified\":\"2023-07-28T20:25:05+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Uma explica\u00e7\u00e3o simples sobre como realizar regress\u00e3o polinomial no Excel, incluindo um exemplo passo a passo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/regressao-polinomial-excel\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/regressao-polinomial-excel\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/regressao-polinomial-excel\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como realizar regress\u00e3o polinomial no excel\"}]},{\"@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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