This book is based on the assumption that the quantities social scientists want to measure, such as attitudes, abilities, price levels, and mobility, can best be represented as unknowns in a statistical model. This method includes both theoretical and practical problems. On the theoretical side, one examines the formulation and testing of an appropriate model and then employs the standard methods of estimation and prediction. On the practical side, one explores the difficulties of implementation deriving from various fields of application. This distinctly statistical approach to social measurement recognizes that in any measuring situation there are two sorts of variables: (1) manifest or indicator variables that one can directly observe, and (2) the latent variables that one cannot observe but wishes to measure. By regarding these all as random variables on common ground, Bartholomew reduces measurement problems to the familiar calculus of probability. Key Features * Argues that social measures should be derived by reference to a statistical (stochastic) model of the process being studied * By analyzing a variety of models, Bartholomew finds the common cords that bind them together in a single whole * Distinctive in its steady attention to the statistical aspects of social measurement and focus
Mr. NUALART D. (86) Barcelone (Espagne) Mme PARK S. (87) Austin (U.S.A.) Ht. PEREZ (87) Grenade (Espagne) Mme PERRIN Y. (85-87) Clermont II Mr. PETRITIS D. (86) Lausanne (Suisse) Mme PICARD D. (86-87) Paris VI Mr. PICARD J. (85-86-87) ...
Special Features: --Each module chapter contains a review of the most important material from previous chapters --Each unit provides a clear, nonstatistical explanation of any symbols appearing in the formulas for that chapter.
本书系统地讲述了统计学有关数据收集、数据整理和数据分析的基本方法。全书共8个任务,分别是认识统计、数据收集、数据整理与显示、数据特征的描述、抽样估计、统计指数、 ...
(美)弗雷(Bruce Frey)著, 邹澍译. 6.7 制随想我们的心思想本漫边际,人们认为这创造不可预测的随机路。你可提周围人在你希的事物上的,利用这个误来测周围人的想。我们对人毛悚然的场面并不陌生,加·爱伦·坡(Edgar Allen Poe)在《莫格街谋杀》(Murders in ...
* Do your students need to organize and summarize data for term projects? Will they need to perform these tasks on the job? This book gives them thorough preparation. *...
人类的智慧使文明不断地从陈旧桎梏中破壳而出,21 世纪是大数据的时代,以数字形态存储的数据中蕴藏着巨大的信息和智慧,正如人们早已对“啤酒和尿不湿”的故事耳熟能详,在如今大数据的浪潮之下,数据分析和数据挖掘技术作为大数据的核心技术基础,其理论和应用价值不言而喻。本书从实际应用的角度,深入浅出地介绍了数据分析和数据挖掘的基本概念和典型技术,以案例的形式进行讲授,并配以基于R语言的实验仿真,帮助读者了解数据挖掘的基本理论体系、掌握数据分析和数据挖掘的基本方法。本书共8章
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