A prototype system for interactive data analysis

The analysis of small and simple data collections is commonly accomplished through the application of "canned" statistical analysis programs. For larger more complex data collections, however, such programs often do not satisfy a researcher's needs. In these cases, the additional use of specially developed computer programs may be necessary. These programs frequently require modification and reformatting of data to meet their input requirements. These additional complexities are compounded when a researcher attempts to investigate alternative hypotheses or pursue hunches requiring further transformations or restructuring of the original data collection. Often, this process involves the services of a professional programmer making repeated program modifications and computer runs.