LOCUS is a research-backed system offering a valuable look at students’ statistical understanding and how that understanding may translate to performance on the AP Statistics exam. LOCUS has been used at the middle, high school and college levels. 

Email info@thinkdataed.org if you are looking for more information on how to gain access to the validated LOCUS assessments. There is evidence to suggest they are a reliable predictor of scores on the AP Statistics exam. 

Visit ThinkData Ed for more information. 

Explore sample items with commentaries.

Build your own test from sample LOCUS items.

If you have any questions regarding the assessments please contact ThinkData Ed.