

{"id":1034383,"date":"2018-09-09T02:00:49","date_gmt":"2018-09-09T09:00:49","guid":{"rendered":"https:\/\/www.questionpro.com\/blog\/o-que-e-a-escala-de-intervalos\/"},"modified":"2025-08-14T11:01:09","modified_gmt":"2025-08-14T18:01:09","slug":"o-que-e-a-escala-de-intervalos","status":"publish","type":"post","link":"https:\/\/www.questionpro.com\/blog\/pt\/o-que-e-a-escala-de-intervalos\/","title":{"rendered":"O que \u00e9 a escala de intervalos?"},"content":{"rendered":"\n<p><span style=\"font-weight: 400;\">A escala intervalar \u00e9 definida como uma <a href=\"https:\/\/www.questionpro.com\/blog\/pt\/niveis-de-medicao-aprende-a-domina-los\/\" target=\"_blank\" rel=\"noopener noreferrer\">escala de medida<\/a> quantitativa em que se mede a diferen\u00e7a entre duas vari\u00e1veis. Por outras palavras, as vari\u00e1veis s\u00e3o medidas em valores reais e n\u00e3o relativos, onde a presen\u00e7a do zero \u00e9 arbitr\u00e1ria. Isto significa que a diferen\u00e7a entre duas vari\u00e1veis numa escala \u00e9 uma dist\u00e2ncia real ou igual. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Por exemplo, a diferen\u00e7a entre 40 graus Celsius e 50 graus Celsius \u00e9 exatamente a mesma que a diferen\u00e7a entre 50 graus Celsius e 60 graus Celsius.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">\u00c9 f\u00e1cil recordar o objetivo desta escala, uma vez que &#8220;intervalo&#8221; \u00e9 igual \u00e0 dist\u00e2ncia entre duas vari\u00e1veis. Outra forma f\u00e1cil de recordar o que \u00e9 uma escala de intervalos \u00e9 considerar que \u00e9 a subtra\u00e7\u00e3o que \u00e9 definida entre duas vari\u00e1veis. Isto \u00e9 diferente da escala de raio, em que a divis\u00e3o \u00e9 definida entre duas vari\u00e1veis. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Os dados da escala podem ser discretos, como n\u00fameros como 8 graus, 4 anos, 2 meses, etc. Ou cont\u00ednuos, com n\u00fameros fraccion\u00e1rios, como 12,2 graus, 3,5 semanas ou 4,2 quil\u00f3metros. <\/span><\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\"><span style=\"font-weight: 400;\">Carater\u00edsticas da escala de intervalos<\/span><\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">As carater\u00edsticas desta escala s\u00e3o as seguintes:<\/span><\/p>\n\n\n\n<ol>\n<li><span style=\"font-weight: 400;\">A escala intervalar \u00e9 prefer\u00edvel \u00e0 escala nominal <\/span><a href=\"https:\/\/www.questionpro.com\/blog\/pt\/escala-nominal-carateristicas-e-exemplos\/\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-weight: 400;\">escala nominal<\/span><\/a><span style=\"font-weight: 400;\"> ou \u00e0 escala <\/span><a href=\"https:\/\/www.questionpro.com\/blog\/pt\/escala-ordinal-exemplos-e-vantagens-da-sua-utilizacao\/\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-weight: 400;\">escala ordinal<\/span><\/a><span style=\"font-weight: 400;\"> porque as duas \u00faltimas s\u00e3o escalas qualitativas. A escala \u00e9 quantitativa no sentido em que a diferen\u00e7a entre dois valores pode ser quantificada. <\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Podes subtrair valores entre duas vari\u00e1veis e isto ajuda-te a compreender a diferen\u00e7a entre duas vari\u00e1veis.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Esta escala permite calcular a m\u00e9dia das vari\u00e1veis.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Esta \u00e9 uma escala preferida em estat\u00edstica porque permite aos investigadores atribuir um valor num\u00e9rico a qualquer avalia\u00e7\u00e3o arbitr\u00e1ria.<\/span><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span style=\"font-weight: 400;\">Exemplos de escalas intervalares<\/span><\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">A escala de intervalos \u00e9 o tipo de pergunta mais frequentemente utilizado num inqu\u00e9rito ou num estudo de investiga\u00e7\u00e3o. Para obter qualquer tipo de resposta, \u00e9 essencial que a pergunta solicitada exija que os inquiridos respondam numa escala num\u00e9rica em que a diferen\u00e7a entre dois n\u00fameros seja a mesma. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Provavelmente, j\u00e1 viste as seguintes escalas em algum estudo: as escalas de satisfa\u00e7\u00e3o, de probabilidade ou de desejo, etc. Na escala intervalar, \u00e9 necess\u00e1rio que o inqu\u00e9rito seja concebido de forma a que a dimens\u00e3o que est\u00e1 a ser medida seja tamb\u00e9m adequadamente escalonada. Isto pode ser feito de forma num\u00e9rica ou verbal. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Os tipos de perguntas para escalas de intervalo s\u00e3o:<\/span><\/p>\n\n\n\n<ul>\n<li>\n<h3><span style=\"font-weight: 400;\">Escala de Likert<\/span><\/h3>\n<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">Uma das perguntas mais frequentes sobre o tipo de escala de intervalo \u00e9 a <\/span><a href=\"https:\/\/www.questionpro.com\/blog\/pt\/o-que-e-a-escala-mais-pequena-e-como-utiliza-la\/\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-weight: 400;\">escala de Likert<\/span><\/a><span style=\"font-weight: 400;\">. Organiza-se numa escala de 5 pontos em que cada emo\u00e7\u00e3o \u00e9 assinalada por um n\u00famero. Estas emo\u00e7\u00f5es v\u00e3o de extremamente insatisfeito a extremamente satisfeito. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Exemplo:<\/span><\/p>\n\n\n\n<ul>\n<li>\n<h3><span style=\"font-weight: 400;\">Pontua\u00e7\u00e3o do promotor l\u00edquido (NPS)<\/span><\/h3>\n<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">Nesta pergunta de intervalo, a pergunta \u00e9 feita utilizando uma quest\u00e3o em que os inquiridos respondem numa escala de 1 a 10. O Pergunta sobre o Net Promote Score baseia-se na probabilidade de um cliente recomendar a tua empresa, produto ou servi\u00e7o aos seus amigos, colegas e familiares.<\/span><\/p>\n\n\n\n<ul>\n<li>\n<h3><span style=\"font-weight: 400;\">Matriz de escalonamento bipolar<\/span><\/h3>\n<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">Outra quest\u00e3o de intervalo \u00e9 quando um objeto \u00e9 avaliado pelo inquirido numa matriz de escala bipolar. matriz de escala bipolar<\/span>.<\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">A escala intervalar d\u00e1 aos investigadores a capacidade de quantificar e diferenciar as op\u00e7\u00f5es. \u00c9 melhor do que a escala nominal e a escala ordinal, uma vez que estas duas n\u00e3o t\u00eam em conta os conhecimentos quantitativos. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">A escala consiste em vari\u00e1veis que existem ao longo de uma escala comum em intervalos iguais. As medidas cient\u00edficas utilizadas para calcular a dist\u00e2ncia entre as vari\u00e1veis s\u00e3o altamente fi\u00e1veis. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Embora n\u00e3o exista um 0 absoluto nesta escala, n\u00e3o \u00e9 poss\u00edvel a divis\u00e3o de vari\u00e1veis. Assim, embora a escala intervalar permita analisar uma grande quantidade de dados a partir de uma pergunta, n\u00e3o tem a capacidade de calcular propor\u00e7\u00f5es. <\/span><\/p>\n\n\n\n<p>Se est\u00e1s prestes a iniciar uma investiga\u00e7\u00e3o, lembra-te que o QuestionPro pode ajudar-te. Temos uma variedade de ferramentas para te ajudar a conduzir uma investiga\u00e7\u00e3o de forma eficaz. Come\u00e7a por criar uma conta gratuita para o nosso software de inqu\u00e9ritos ou solicita uma demonstra\u00e7\u00e3o para saber mais sobre as nossas funcionalidades avan\u00e7adas.<\/p>\n\n\n\n<br>\n<center>\n<a href=\"https:\/\/eu.questionpro.com\/a\/showEntry.do?lan=pt_PT&#038;custom1=blog\">\n        <button style=\"background: #ff9f00\">Cria uma conta gratuita<\/button>\n    <\/a>\n    <a href=\"https:\/\/contactar.questionpro.com\/t\/AM4X9Z3LxD?custom1=o-que-e-a-escala-de-intervalos\u201d target=\"_blank\" rel=\"noopener\">\n        <button>Agendar uma demonstra\u00e7\u00e3o<\/button>\n    <\/a>\n<\/center>\n<br>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A escala intervalar \u00e9 definida como uma escala de medida quantitativa em que se mede a diferen\u00e7a entre duas vari\u00e1veis. [&hellip;]<\/p>\n","protected":false},"author":38,"featured_media":1034384,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"escala de intervalos","_yoast_wpseo_title":"O que \u00e9 a escala de intervalos?","_yoast_wpseo_metadesc":"Aprende as carater\u00edsticas distintivas da escala intervalar e como utiliz\u00e1-la na tua pr\u00f3xima pesquisa. Aqui tens alguns exemplos","_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[2193,2140],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 a escala de intervalos?<\/title>\n<meta name=\"description\" content=\"Aprende as carater\u00edsticas distintivas da escala intervalar e como utiliz\u00e1-la na tua pr\u00f3xima pesquisa. 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