{"id":13858,"date":"2025-07-15T13:34:47","date_gmt":"2025-07-15T13:34:47","guid":{"rendered":"https:\/\/functiontranslator.com\/prueba-chi\/"},"modified":"2021-02-26T08:43:21","modified_gmt":"2021-02-26T08:43:21","slug":"chitest","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/es\/chitest\/","title":{"rendered":"PRUEBA.CHI"},"content":{"rendered":"<h2>Sintaxis y descripci\u00f3n del comando<\/h2>\n<p>El comando <code>PRUEBA.CHI<\/code> en Microsoft Excel y Google Sheets se utiliza para llevar a cabo la prueba de chi-cuadrado de independencia, que sirve para evaluar si dos variables categ\u00f3ricas son independientes entre s\u00ed dentro de una poblaci\u00f3n estad\u00edstica.<\/p>\n<p>La sintaxis de la funci\u00f3n es:<\/p>\n<pre><code>PRUEBA.CHI(matriz_datos_reales, matriz_datos_observados)<\/code><\/pre>\n<ul>\n<li><strong>matriz_datos_reales<\/strong>: Es un rango o matriz que contiene las frecuencias observadas en las categor\u00edas que se estudian.<\/li>\n<li><strong>matriz_datos_observados<\/strong>: Es un rango o matriz que contiene las frecuencias te\u00f3ricas o esperadas, las cuales se calcularon suponiendo que la hip\u00f3tesis nula es cierta.<\/li>\n<\/ul>\n<p>Esta funci\u00f3n devuelve el valor &#8216;p&#8217; de la prueba, que representa la probabilidad de obtener un resultado de prueba tan extremo como el observado, bajo la hip\u00f3tesis nula de que las variables son independientes. Un valor &#8216;p&#8217; peque\u00f1o (por ejemplo, menor que 0.05) ofrece evidencia suficiente para rechazar la hip\u00f3tesis nula y afirmar que existe una relaci\u00f3n entre las variables.<\/p>\n<h2>Aplicaciones pr\u00e1cticas de la funci\u00f3n<\/h2>\n<h3>Caso 1: Evaluaci\u00f3n del efecto de una campa\u00f1a publicitaria<\/h3>\n<p>Suponga que una empresa ha implementado una nueva campa\u00f1a publicitaria y desea determinar su impacto en las ventas en distintas regiones. Considere la siguiente tabla de ventas esperadas y observadas en dos regiones diferentes:<\/p>\n<table>\n<tr>\n<th>Regi\u00f3n<\/th>\n<th>Ventas Observadas<\/th>\n<th>Ventas Esperadas<\/th>\n<\/tr>\n<tr>\n<td>Norte<\/td>\n<td>300<\/td>\n<td>260<\/td>\n<\/tr>\n<tr>\n<td>Sur<\/td>\n<td>250<\/td>\n<td>290<\/td>\n<\/tr>\n<\/table>\n<p>Para analizar la significancia de las diferencias, emplearemos <code>PRUEBA.CHI<\/code>:<\/p>\n<pre><code>=PRUEBA.CHI(B2:B3, C2:C3)<\/code><\/pre>\n<p>Si el valor &#8216;p&#8217; obtenido es menor a 0.05, podemos concluir que la campa\u00f1a tuvo un efecto significativo en las ventas entre las regiones.<\/p>\n<h3>Caso 2: An\u00e1lisis de preferencias de producto<\/h3>\n<p>Consideremos una empresa que desea investigar si existe una preferencia significativa por un producto entre dos grupos etarios. Veamos los datos siguientes:<\/p>\n<table>\n<tr>\n<th>Grupo de edad<\/th>\n<th>Preferencia por Producto A<\/th>\n<th>Preferencia Esperada<\/th>\n<\/tr>\n<tr>\n<td>J\u00f3venes<\/td>\n<td>85<\/td>\n<td>70<\/td>\n<\/tr>\n<tr>\n<td>Adultos<\/td>\n<td>65<\/td>\n<td>80<\/td>\n<\/tr>\n<\/table>\n<p>Usaremos la f\u00f3rmula siguiente para evaluar si las diferencias observadas son significativas:<\/p>\n<pre><code>=PRUEBA.CHI(B2:B3, C2:C3)<\/code><\/pre>\n<p>Un valor &#8216;p&#8217; menor que 0.05 indicar\u00eda una variaci\u00f3n significativa en la preferencia del producto entre los grupos de edad, permitiendo a la empresa adaptar sus estrategias de marketing basadas en estos hallazgos.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Devuelve la prueba de independencia<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[542],"tags":[],"class_list":["post-13858","post","type-post","status-publish","format-standard","hentry","category-compatibilidad"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Funci\u00f3n CHITEST (PRUEBA.CHI) en Excel \u2013 c\u00f3mo funciona, ejemplos y sintaxis<\/title>\n<meta name=\"description\" content=\"Explicaci\u00f3n breve de la funci\u00f3n CHITEST (PRUEBA.CHI) de Excel. 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