The evidence model served as the blueprint in the development of items for the LOCUS Assessments. The full document consists of the following columns:

Code*†, Description, Evidence Statement, Possible Work Products, Upper Category Observable Features, and Lower Category Observable Features.

If you utilize this in your work, please cite the full document as follows:

Haberstroh, J., Jacobbe, T., delMas, R., Hartlaub, B., Miller, D., Scheaffer, R., Shaughnessy, J. M., Watson, J. (2015). LOCUS Evidence Model. Retrieved from

The evidence-centered design Process has been featured in the following manuscripts:

Jacobbe, T., Case, C., Whitaker, D., & Foti, S. (2014). Establishing the content validity of the LOCUS assessments through evidence centered design In K. Makar & R. Gould (Eds.) Proceedings of the 9th International Conference on Teaching Statistics.

* Levels: B = Beginning, I = Intermediate, A = Advanced
† Component: FQ = Formulate Questions, CD = Collect Data, AD = Analyze Data, IR = Interpret Results