We reviewed Ch. 3 Statistics for Describing and Comparing Data and 4 Probability including rule of complementary events, formal addition rule, compound event, actual odds in favor, actual odds against, pay of odds, probability distribution, unlikely, unusually low number, unusually high number, complement, law of large numbers, event, simple event, sample space, rare event rule for inferential statistics; 5-number summary, quartiles, percentiles, z-score (standard value), unbiased estimator, coefficients of variation, Chebyshev's Theorem, empirical rule, standard deviation, mean absolute deviation, unbiased estimator, variance, range, weighted mean, mean, median, midrange, mode, measures of center.