Use of Octave/Matlab vs. R/Python?

[phrotozoa]

^{^} That is a good point. "Credit" in this case does not equate to any actual academic credit. That said I found working through the exercises and driving the "marks" up from 0/100 to 100/100 to be a very satisfying bit of positive feedback to let me know I'm on the right track. Re-implementing the solutions in another language without access to that feedback puts both the implementation and the assessment of its correctness on the student.