Spreadsheets ("Excel programs") are files with a tabular presentation. According to several studies they are both widely used and error-prone. To support the testing of those spreadsheet, the Spreadsheet Inspection Framework (SIF) was developed and expanded throughout severeal thesis projects. Furthermore an integration for Microsoft Excel was developed as a user interface for the SIF, the SIF Excel Integration (SIFEI).

Goal of the thesis is to expand the SIF to support a plausibility check of implicitly coupled spreadsheet data to improve the data quality in spreadsheets. Also the SIFEI is to be expanded to support defining and running those tests through Excel.

Concluding, the concept and the implementation were evaluated. The concept showed to be applicable but the user needs help when using the program for the first time and the availability for the needed data might pose a problem.