Chapters 7, 8, 9, 11, 12. Click True/False to see instant feedback and keep score. Concept focus only (minimal math).
Key ideas tested: parameters vs statistics, unbiased estimators, sampling distributions & CLT, meaning of confidence level, effects of n and confidence on CI width, p-values and Type I/II errors, correlation vs causation, R² meaning, multiple regression interpretation, VIF/multicollinearity, and basic Excel/solver/matrix ideas for estimating β.