sexta-feira, 8 de abril de 2005

Cálculo Estatístico Interactivo

Esta página (Interactive Statistical Calculation Pages) apresenta uma extensa e bem descrita colecção de recursos que permitem efectuar cálculos estatísticos variados.
Quem utiliza estes cálculos irá achar esta página muito útil.
Para além de outros links, também nos fornece uma lista de pacotes de software gratuito que se podem instalar no PC e usar posteriormente offline.

"The web pages listed here comprise a powerful, conveniently-accessible, multi-platform statistical software package. There are also links to online statistics books, tutorials, downloadable software, and related resources. All of these resources are freely accessible, once you can get onto the Internet.(...)

Table of Contents for this page...

  • Selecting the right kind of analysis
  • "Online Software" Package websites
  • Calculators, plotters, function integrators, and interactive programming environments
  • Probability distribution functions: tables, graphs, random number generators
  • Descriptive statistics, histograms, charts
  • Confidence intervals, single-population tests
  • Sample comparisons: t-tests, ANOVAs, non-parametric comparisons
  • Contingency tables, cross-tabs, Chi-Square tests
  • Regression, correlation, least squares curve-fitting, non-parametric correlation
  • Analysis of survival data
  • Bayesian Methods
  • Other statistical tests and analyses
  • Specialized and discipline-specific tests and analyses
  • Power, sample size and experimental design"

    [30.05.05]

    Este recurso também é muito bom:

    Electronic Statistics Textbook, da StatSoft, oferece orientação e formação na aplicação de estatísticas e abrange uma grande variedade de aplicações "… including laboratory research (biomedical, agricultural, etc.), business statistics and forecasting, social science statistics and survey research, data mining, engineering and quality control applications, and many others.

    The Electronic Textbook begins with an overview of the relevant elementary (pivotal) concepts and continues with a more in depth exploration of specific areas of statistics, organized by "modules," accessible by buttons, representing classes of analytic techniques. A glossary of statistical terms and a list of references for further study are included."


    Ver com atenção a informação disponibilizada nos “contents”.

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