{"id":189056,"date":"2025-10-14T18:45:52","date_gmt":"2025-10-14T16:45:52","guid":{"rendered":"https:\/\/candas365.es\/noticias\/?p=189056"},"modified":"2025-10-14T18:47:24","modified_gmt":"2025-10-14T16:47:24","slug":"como-se-elaboran-las-encuestas-del-cis","status":"publish","type":"post","link":"https:\/\/candas365.es\/noticias\/como-se-elaboran-las-encuestas-del-cis\/","title":{"rendered":"C\u00f3mo se elaboran las encuestas del CIS"},"content":{"rendered":"<p>El CIS elabora sus encuestas mediante muestras representativas, entrevistas y ponderaciones estad\u00edsticas para conocer la <a href=\"https:\/\/candas365.es\/noticias\/category\/actualidad\/\"><span style=\"color: #ff6600;\"><strong>opini\u00f3n p\u00fablica en Espa\u00f1a<\/strong><\/span><\/a>.<\/p>\n<figure id=\"attachment_189057\" aria-describedby=\"caption-attachment-189057\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-large wp-image-189057\" src=\"https:\/\/candas365.es\/noticias\/wp-content\/uploads\/2025\/10\/encuestas-del-CIS-650x411.jpg\" alt=\"encuestas del CIS\" width=\"650\" height=\"411\" srcset=\"https:\/\/candas365.es\/noticias\/wp-content\/uploads\/2025\/10\/encuestas-del-CIS-650x411.jpg 650w, https:\/\/candas365.es\/noticias\/wp-content\/uploads\/2025\/10\/encuestas-del-CIS-360x227.jpg 360w, https:\/\/candas365.es\/noticias\/wp-content\/uploads\/2025\/10\/encuestas-del-CIS-768x485.jpg 768w, https:\/\/candas365.es\/noticias\/wp-content\/uploads\/2025\/10\/encuestas-del-CIS-150x95.jpg 150w, https:\/\/candas365.es\/noticias\/wp-content\/uploads\/2025\/10\/encuestas-del-CIS-450x284.jpg 450w, https:\/\/candas365.es\/noticias\/wp-content\/uploads\/2025\/10\/encuestas-del-CIS.jpg 1043w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><figcaption id=\"caption-attachment-189057\" class=\"wp-caption-text\">Foto: 123rf.com<\/figcaption><\/figure>\n<p>El Centro de Investigaciones Sociol\u00f3gicas (<span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/www.cis.es\/\" target=\"_blank\" rel=\"noopener\"><strong>CIS<\/strong><\/a><\/span>) es el organismo p\u00fablico encargado de analizar la opini\u00f3n de los ciudadanos sobre pol\u00edtica, sociedad y actualidad en Espa\u00f1a.<strong> Su trabajo es fundamental para conocer tendencias sociales y electorales, pero tambi\u00e9n genera debate sobre su metodolog\u00eda y neutralidad.<\/strong><\/p>\n<p>El proceso de elaboraci\u00f3n de las encuestas del CIS combina t\u00e9cnicas estad\u00edsticas, entrevistas personales y an\u00e1lisis de datos. <strong>Cada estudio sigue un protocolo que busca representar de forma equilibrada a la poblaci\u00f3n espa\u00f1ola.<\/strong><\/p>\n<h2>1. Selecci\u00f3n de la muestra<\/h2>\n<p>Todo parte de la llamada muestra representativa. El CIS utiliza el censo de poblaci\u00f3n y vivienda del INE para distribuir las entrevistas por comunidades aut\u00f3nomas, provincias, municipios y sexo.<\/p>\n<p>El objetivo es que las personas encuestadas reflejen fielmente la estructura real del pa\u00eds. <strong>En un estudio tipo, se realizan entre 2.000 y 4.000 entrevistas para toda Espa\u00f1a.<\/strong><\/p>\n<h2>2. Entrevistas personales y telef\u00f3nicas<\/h2>\n<p>El trabajo de campo lo realizan empresas demosc\u00f3picas contratadas mediante concurso p\u00fablico. Las entrevistas se efect\u00faan cara a cara o por tel\u00e9fono, y las respuestas se registran de forma an\u00f3nima. <strong>Los cuestionarios incluyen preguntas sobre intenci\u00f3n de voto, valoraci\u00f3n de l\u00edderes, situaci\u00f3n econ\u00f3mica o temas sociales de actualidad.<\/strong><\/p>\n<h2>3. Control y ponderaci\u00f3n de los datos<\/h2>\n<p>Una vez recogidas las respuestas, los datos pasan por un proceso de verificaci\u00f3n. El CIS aplica ponderaciones estad\u00edsticas, es decir, corrige los posibles desequilibrios de la muestra (por edad, sexo o territorio) para que el resultado se acerque a la realidad poblacional.<\/p>\n<p>Estas ponderaciones son habituales en la demoscopia, aunque tambi\u00e9n son fuente de cr\u00edticas:<br \/>\nalgunos expertos consideran que pueden introducir sesgos si se ajustan de forma excesiva o subjetiva.<\/p>\n<p>4. Publicaci\u00f3n y transparencia<\/p>\n<p>Los resultados se publican en la web del CIS, con acceso libre a los microdatos. Esto permite que universidades, medios y analistas revisen las cifras y elaboren sus propias interpretaciones. El organismo tambi\u00e9n publica fichas t\u00e9cnicas donde se detallan el tama\u00f1o de la muestra, el error estad\u00edstico y las fechas del trabajo de campo.<\/p>\n<h2>5. Debate y confianza p\u00fablica<\/h2>\n<p><strong>Las encuestas del CIS son herramientas valiosas, pero no infalibles.<\/strong> Su precisi\u00f3n depende de la honestidad de las respuestas, la calidad del muestreo y el momento pol\u00edtico en que se realizan. El debate sobre su neutralidad es leg\u00edtimo: el CIS es un ente p\u00fablico, y sus resultados pueden influir en la percepci\u00f3n del electorado.<\/p>\n<p>Sin embargo, los datos del CIS no sustituyen las urnas; son solo una fotograf\u00eda del estado de opini\u00f3n en un momento concreto. <strong>Entender su m\u00e9todo es esencial para valorar sus conclusiones con sentido cr\u00edtico.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>El CIS elabora sus encuestas mediante muestras representativas, entrevistas y ponderaciones estad\u00edsticas para conocer la opini\u00f3n p\u00fablica en Espa\u00f1a. El Centro de Investigaciones Sociol\u00f3gicas (CIS) es el organismo p\u00fablico encargado de analizar la opini\u00f3n de los ciudadanos sobre pol\u00edtica, sociedad y actualidad en Espa\u00f1a. Su trabajo es fundamental para conocer tendencias sociales y electorales, pero<\/p>\n","protected":false},"author":1,"featured_media":189057,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[343,316],"tags":[466],"class_list":{"0":"post-189056","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-actualidad","8":"category-destacadas","9":"tag-espana"},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"El CIS elabora sus encuestas mediante muestras representativas, entrevistas y ponderaciones estad\u00edsticas para conocer la opini\u00f3n p\u00fablica en Espa\u00f1a.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Cand\u00e1s 365\"\/>\n\t<meta name=\"google-site-verification\" content=\"UA-32230408-1\" 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