There is a pdf file study guide for each topic in the AP Statistics curriculum. Exploring Data, Normal Distributions, Linear Regressions, Experiments and Designing Studies, Probability, Random Variables, Sampling Distributions, Confidence Intervals, Hypothesis Tests, Comparing Populations, Chi Square Procedures, and Inference about Regression. I have students complete one for each unit. At the end of the year, they have a great study packet for the AP Exam! Student feedback has indicated that th