How Tall is a Sticky Note? (Hands-On, Low Prep) Engage your AP Statistics students with a fun, hands-on regression activity they’ll actually remember! In this lab, students estimate the thickness of a single sticky note by stacking and measuring different counts of notes, then modeling the relationship with a least-squares regression line (LSRL).Students collect their own data, interpret slope and intercept in context, check model fit with residuals, and make both forward and inverse prediction