Course alumni should not feel that they cannot 'do' statistics because they lack a special add-in or dedicated package function that may require administrative privileges to install. Course alumni and readers of this text are most likely to encounter default installations of spreadsheet software without such additional software.
The text does not use any add-ins, add-ons, statistical extensions, or separate dedicated proprietary statistical packages. Both Calc and Gnumeric are open source, cross-platform software and can be downloaded from their respective web sites. This statistics text utilizes /Apache Calc and Gnome Gnumeric to make statistical calculations and box plots.