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Some statistical tasks (such as running an analysis of variance
(ANOVA) or creating a barplot) are performed by calling R software
for
statistical computing.

The following system requirements must be met for calling R:

- R must be installed on your system.
- Within R, the
non-standard packages
**Rserve, RSvgDevice**and reshape2 must be installed. - Rserve must be started and listening to the default port (6911).