1. M.Aliagaet al. Guidelines for Assessment and instruction in statistics education college report American Statistical Association 2005 available atamstat.org/education/gaise.
2. P.Arnold Statistical investigative questions—An enquiry into posing and answering investigative questions from existing data.(Doctor of Philosophy) The University of Auckland 2013 available athttps://researchspace.auckland.ac.nz/handle/2292/21305.
3. What Makes a Good Statistical Question?
4. P.Burdman Degrees of freedom:Probing math placement policies at California colleges and universities (Report 3 of a 3‐part series) Report issued by PACE Foundation and Learning Works 2015 available athttps://edpolicyinca.org/sites/default/files/PACE%203.pdf.