Through definitions, examples, & practice problems, use these AP Statistics NOTES WITH VIDEOS to help you teach or as an AP Statistics review of SAMPLING METHODS (3-1), TYPES OF BIAS (3-2), and OBSERVATIONAL STUDIES & EXPERIMENT DESIGN (3-3) whether you’re teaching in-person or distance learning! The screen-recorded videos of each lesson are perfect for absent students or as a substitute plan with no prep needed! Already taught through these topics this school year? Use these notes pages