These AP Statistics NOTES WITH VIDEO will help you teach the TYPES OF BIAS – undercoverage bias, nonresponse bias, voluntary response bias, response bias, question-wording bias, and self-reporting bias! Students will identify the different ways each type of bias may present itself, see examples of each type, and examine how non-random sampling methods introduce potential bias. AP Statistics students will also utilize clear instructions for how to answer AP free-response questions involving bias.