Maxima is extended through packages. The Moodle STACK plug has statistical support packages loaded by default. These are Stats, Descriptive and Distrib. We preload these packages using the optimisation steps.
We can load your data sets as part of the optimisation process. These will then be available as a matrix variable which you can use in questions. Manipulation of matrices isn’t as nice in Maxima as it is in the R environment, but it has a good range of functions.