{"id":111404,"date":"2020-09-17T07:00:37","date_gmt":"2020-09-17T14:00:37","guid":{"rendered":"https:\/\/www.questionpro.com\/blog\/?p=111404"},"modified":"2020-09-17T07:00:37","modified_gmt":"2020-09-17T14:00:37","slug":"escala-de-intervalo","status":"publish","type":"post","link":"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-de-intervalo\/","title":{"rendered":"Escala de intervalo: 3\u00ba n\u00edvel da escala de medi\u00e7\u00e3o"},"content":{"rendered":"<ul>\n<li><a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escalas-de-medicao\/\" target=\"_blank\" rel=\"noopener noreferrer\">Escalas de medi\u00e7\u00e3o<\/a><\/li>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-nominal\/\" target=\"_blank\" rel=\"noopener noreferrer\">1\u00ba n\u00edvel: escala nominal<\/a><\/li>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-ordinal\/\" target=\"_blank\" rel=\"noopener noreferrer\">2\u00ba n\u00edvel: escala ordinal<\/a><\/li>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-de-razao\/\" target=\"_blank\" rel=\"noopener noreferrer\">4\u00ba n\u00edvel: escala de raz\u00e3o<\/a><\/li>\n<\/ul>\n<hr \/>\n<p>A escala de intervalo \u00e9 definida como uma <a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escalas-de-medicao\/\" target=\"_blank\" rel=\"noopener noreferrer\">escala de medi\u00e7\u00e3o<\/a> de <a href=\"https:\/\/www.questionpro.com\/pt-br\/dados-quantitativos.html\" target=\"_blank\" rel=\"noopener noreferrer\">dados quantitativos<\/a> na qual a diferen\u00e7a entre duas vari\u00e1veis \u00e9 medida.<\/p>\n<p>Em outras palavras, as vari\u00e1veis s\u00e3o medidas em valores reais e n\u00e3o de forma relativa, onde a presen\u00e7a de zero \u00e9 arbitr\u00e1ria. Isto significa que a diferen\u00e7a entre duas vari\u00e1veis em uma escala \u00e9 uma dist\u00e2ncia real ou igual. Por exemplo, a diferen\u00e7a entre 1m e 2m \u00e9 a mesma que a diferen\u00e7a entre 3m e 4m.<\/p>\n<p>\u00c9 f\u00e1cil lembrar o prop\u00f3sito desta escala, j\u00e1 que &#8220;intervalo&#8221; \u00e9 equivalente \u00e0 dist\u00e2ncia entre duas vari\u00e1veis. Outra maneira f\u00e1cil de lembrar o que \u00e9 uma escala de intervalo \u00e9 considerar que esta \u00e9 a subtra\u00e7\u00e3o que \u00e9 definida entre duas vari\u00e1veis. Isto \u00e9 diferente da <a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-de-razao\/\" target=\"_blank\" rel=\"noopener noreferrer\">escala de raz\u00e3o<\/a>, onde a divis\u00e3o \u00e9 definida entre duas vari\u00e1veis.<\/p>\n<p>&nbsp;<\/p>\n<h2>As 4 caracter\u00edsticas principais da escala de intervalo<\/h2>\n<p>&nbsp;<\/p>\n<ol>\n<li>A escala de intervalo \u00e9 prefer\u00edvel \u00e0 <a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-nominal\/\" target=\"_blank\" rel=\"noopener noreferrer\">escala nominal<\/a> ou <a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-ordinal\/\" target=\"_blank\" rel=\"noopener noreferrer\">ordinal<\/a> porque as duas \u00faltimas s\u00e3o escalas qualitativas. S\u00e3o de origem quantitativa, no sentido de que voc\u00ea pode quantificar a diferen\u00e7a entre dois valores.<\/li>\n<li>Voc\u00ea pode subtrair valores entre duas vari\u00e1veis e isto o ajuda a entender a diferen\u00e7a entre duas vari\u00e1veis.<\/li>\n<li>Esta escala permite calcular a m\u00e9dia das vari\u00e1veis.<\/li>\n<li>Esta \u00e9 uma escala preferida nas estat\u00edsticas porque permite aos pesquisadores atribuir um valor num\u00e9rico a qualquer avalia\u00e7\u00e3o arbitr\u00e1ria.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h2>Exemplos<\/h2>\n<p>A escala de intervalo \u00e9 o tipo de pergunta mais frequentemente usada em uma <a href=\"https:\/\/www.questionpro.com\/pt-br\/\" target=\"_blank\" rel=\"noopener noreferrer\">pesquisa<\/a>. Para obter qualquer tipo de resposta, \u00e9 essencial que a pergunta solicitada exija que os respondentes respondam em uma escala num\u00e9rica onde a diferen\u00e7a entre os dois n\u00fameros seja a mesma.<\/p>\n<p>Nesse tipo de escala, a pesquisa deve ser projetada para que a dimens\u00e3o a ser medida tamb\u00e9m seja escalonada adequadamente. Isto pode ser conseguido tanto numericamente quanto verbalmente.<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>Escala de Likert<\/strong><\/li>\n<\/ul>\n<p>Uma das perguntas mais comuns do tipo escala de intervalo \u00e9 a <a href=\"https:\/\/www.questionpro.com\/pt-br\/escala_likert\/\" target=\"_blank\" rel=\"noopener noreferrer\">escala Likert<\/a>. Esta \u00e9 uma escala de 5 pontos onde cada emo\u00e7\u00e3o \u00e9 numerada. Essas emo\u00e7\u00f5es variam de extremamente insatisfeitas a extremamente satisfeitas.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-109995 size-full\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2018\/02\/Likert-scale-survey.jpg\" alt=\"escala de intervalo - pergunta likert\" width=\"934\" height=\"194\" \/><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li><b>NPS &#8211; Net Promoter Score<\/b><\/li>\n<\/ul>\n<p>\u00c9 aplicada uma pergunta onde os entrevistados respondem de acordo com uma escala de 1 a 10. A pergunta da <a href=\"https:\/\/www.questionpro.com\/pt-br\/nps-score.html\" target=\"_blank\" rel=\"noopener noreferrer\">NPS &#8211; Net Promoter Score<\/a>, se baseia na probabilidade de um cliente recomendar seu neg\u00f3cio, produto ou servi\u00e7o a seus amigos, colegas e fam\u00edlia.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-110137 size-full\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2018\/02\/Captura-de-Tela-2020-08-25-a\u0300s-13.41.36.png\" alt=\"escala de intervalo - pergunta nps 1\" width=\"963\" height=\"161\" \/><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>Matriz bipolar<\/strong><\/li>\n<\/ul>\n<p>Outra quest\u00e3o de intervalo \u00e9 quando um objeto \u00e9 avaliado pelo respondente em uma matriz bipolar (usando uma escala de classifica\u00e7\u00e3o de 5 pontos):<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-111405 size-full\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/09\/Captura-de-Tela-2020-09-12-a\u0300s-18.01.49.png\" alt=\"escala de intervalo - matriz bipolar\" width=\"953\" height=\"206\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>A escala de intervalo d\u00e1 aos pesquisadores a capacidade de quantificar e diferenciar entre as op\u00e7\u00f5es. Isto \u00e9 melhor do que a <a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-nominal\/\" target=\"_blank\" rel=\"noopener noreferrer\">escala nominal<\/a> e a <a href=\"https:\/\/www.questionpro.com\/blog\/pt-br\/escala-ordinal\/\" target=\"_blank\" rel=\"noopener noreferrer\">escala ordinal<\/a>, pois estas duas n\u00e3o levam em conta o conhecimento quantitativo.<\/p>\n<p>Ela 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 confi\u00e1veis.<\/p>\n<p>Embora n\u00e3o exista um zero absoluto nesta escala, a divis\u00e3o das vari\u00e1veis n\u00e3o \u00e9 poss\u00edvel. Assim, embora a escala de intervalo permita analisar uma grande quantidade de dados de uma pergunta, ela n\u00e3o tem a capacidade de calcular propor\u00e7\u00f5es.<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">A<\/span><span style=\"font-weight: 400;\">gora que voc\u00ea sabe o que \u00e9 uma <strong>escala de intervalo<\/strong>, \u00e9 hora de come\u00e7ar a <\/span><a href=\"https:\/\/www.questionpro.com\/pt-br\/tour\/\"><span style=\"font-weight: 400;\">pesquisar<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0 Lembre-se que na<\/span> <a href=\"https:\/\/www.questionpro.com\/pt-br\/\"><span style=\"font-weight: 400;\">QuestionPro<\/span><\/a><span style=\"font-weight: 400;\"> temos as ferramentas de <\/span><a href=\"https:\/\/www.questionpro.com\/pt-br\/tour\/\"><span style=\"font-weight: 400;\">pesquisa online<\/span><\/a><span style=\"font-weight: 400;\"> e tamb\u00e9m <\/span><a href=\"https:\/\/www.questionpro.com\/pt-br\/mobile\/\"><span style=\"font-weight: 400;\">offline<\/span><\/a><span style=\"font-weight: 400;\"> que voc\u00ea precisa para o seu neg\u00f3cio decolar! Agende uma demonstra\u00e7\u00e3o sem compromisso, totalmente gratuita e em portugu\u00eas e conhe\u00e7a todos os<\/span> <span style=\"font-weight: 400;\">recursos que temos dispon\u00edveis em nossas <\/span><a href=\"https:\/\/www.questionpro.com\/pt-br\/features\/\"><span style=\"font-weight: 400;\">diferentes licen\u00e7as<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/demonstracaovirtual.questionpro.com\/\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-109079 size-medium\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/08\/bota\u0303o-demo-1-300x46.png\" alt=\"agendar demonstra\u00e7\u00e3o\" width=\"300\" height=\"46\" \/><\/a><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-109585 size-full alignnone\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/08\/linha.png\" alt=\"\" width=\"755\" height=\"40\" \/><\/p>\n<p><a href=\"https:\/\/www.facebook.com\/questionpro\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-109606 alignleft\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/08\/facebook-e1597935894781.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/a> <a href=\"https:\/\/www.youtube.com\/channel\/UC7BZDtLJ0mdrVqrVtyToMTw\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-109648 alignleft\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/08\/youtube-e1597935924174.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/a> <a href=\"https:\/\/twitter.com\/QuestionProBr\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-109634 alignleft\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/08\/twitter-e1597936001521.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/a> <a href=\"https:\/\/www.instagram.com\/questionprobr\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-109620 alignleft\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/08\/instagram-e1597936031661.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/a> <a href=\"https:\/\/www.linkedin.com\/company\/questionpro-br\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-109627 alignleft\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2020\/08\/linkedin-e1597935985111.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Escalas de medi\u00e7\u00e3o 1\u00ba n\u00edvel: escala nominal 2\u00ba n\u00edvel: escala ordinal 4\u00ba n\u00edvel: escala de raz\u00e3o A escala de intervalo [&hellip;]<\/p>\n","protected":false},"author":40,"featured_media":64603,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_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":[223,217,214],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Escala de intervalo: 3\u00ba n\u00edvel da escala de medi\u00e7\u00e3o | QuestionPro<\/title>\n<meta name=\"description\" content=\"A escala de intervalo \u00e9 o 3\u00ba n\u00edvel na escala de medi\u00e7\u00e3o de dados. 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