A software tool via web for the statistical data analysis

The spread of Internet and the growing demand of services from the web users have changed and are still changing the way to organize the work or tthe study. Nowadays, the main part of information and many services are on the web and the software is going toward the same direction: in fact, the use of software implemented via web is ever-increasing, with a client-server logic that enables the "centralized" use of software installed on a server. In this paper we describe the structure and the running of R-php, an environment for statistical analysis, freely accessible and attainable through the World Wide Web, based on the statistical environment R. R-php is based on two modules: a base module and a point-and-click module. By using the point-and-click module, the so far implemented statistical analyses include also ANOVA, linear regression and some data analysis methods such as cluster analysis and PCA(Principal Component Analysis).