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Este libro es un manual de introducción al estudio de la Estadística, válido para estudiantes de Economía no iniciados en la materia y para toda persona interesada en el conocimiento de las técnicas estadísticas, sea o no especialista en el campo económico. Su contenido se centra en el análisis descriptivo de datos (Estadística Descriptiva), cuyo conocimiento constituye la base de los métodos estadísticos, imprescindible para abordar posteriormente desarrollos más complejos de la Estadística. El texto consta de doce capítulos, en los cuales, tras describirse los conceptos básicos de la Estadística, se pasa al análisis estadístico de una variable (parte I) y al de dos a más variables (parte II); en este caso con atención expresa al análisis de la dependencia entre variables (regresión y correlación). Se incluye también un capítulo específico orientado al tratamiento estadístico de variables cualitativas (parte III), para terminar en el estudio de las series temporales en una doble vertiente: análisis de la forma en que éstas evolucionan históricamente (parte IV, análisis clásico de series temporales) y análisis de las variaciones que se producen en su magnitud a lo largo del tiempo (parte V, números índices). Por su condición de texto básico está elaborado con la intención de proporcionar al estudiante los adecuados conocimientos teórico-prácticos, sin agobiar con excesivos desarrollos matemático-estadísticos. Se ha procurado qu este manual sea autosuficiente, de manera que los conceptos vertidos a nivel teórico se complementan con ejercicios prácticos, a modo de ejemplos, que deben facilitar al lector un entendimiento más intuitivo de los contenidos. En cada tema se incluyen pruebas teóricas tipo test y ejercicios complementarios no resueltos, para que el interesado evalúe, en cada momento, su nivel de aprendizaje.