Random error, 501
Random number generator, 12
Random sample
Random variables. See also Binomial random variables; Continuous random variables; Discrete random variables
Randomized block experiments, 390
Range, 65
Rank-sum test. See Wilcoxon rank sum test
Rank sums, 404
Rare-event approach, 89
Regression analysis. See also Linear regression
Regression line, 506
Regression residuals. See Residuals
Rejection region, 353
Relative frequency distribution
Relative standing. See Measures of relative standing
Reliability, 8
Representative sample, 12
Research hypothesis. See Alternative hypothesis
Residual sum of squares. See Sum of squares of error (SSE)
Residuals, 506
Response variable, 502
Robust method, ANOVA as, 429