690 Index interactions, 584 least median of squares, 487 least-trimmed squares, 488 logistic model, 522 outliers, 520 regression outlier, 475 resistance, 63 ridge regression, 602 RMBA estimator, 232 robust, 23 Rom's Method, 329 running-interval smoother, 562 STS, 504 sup, 26 supremum, 26 R (continued) t1waybt, 302 t1wayF, 298 t1wayv2, 295 t2way, 18, 308 t3way, 313 tauloc, 85 TKmeans, 288 Tkmeans.grp, 288 tmcppb, 331 trimci, 114 trimcibt, 124 trimpb, 123 tsplit, 411 tsplitbt, 414 tsreg, 486 tsreg, explanatory power, 599 TWOpov, 605 winci, 114 wlogregci, 542 wmcppb, 403 wmwanova, 358 wmwloc, 185 wwmcppb, 423 wwwmcppb, 440 wwwtrim, 437 wwwtrimbt, 437 YYmanova, 367 YYmcp, 369 Rallfun, 12 regression HC4, 478 T tau measure of location, 84 tau measure of variation, 94 TBS estimator, 227 triefficiency, 91 Tukey's median, 228 S S-estimators, 227 saddlepoint approximation, 125 scale measures of, 36 scale equivariance, 24, 36 scale estimator, 89 sequentially rejective, 329 shift function, 139 sign invariance, 36 slash distribution, 87 smooth, 558 smoother, 558 SNM method, 504 spherical PCA, 280 splines, 563, 569 SR, 346 strength of association explanatory, 598 V varfun, 599 W Wald scores, 534 Wald statistic, 478 Walsh averages, 85 Winsorize, 30 Winsorized expected values, 39 Winsorized regression, 508 Winsorized sample mean, 59 Winsorized Variance, 37 Winsorized variance, 61 Winsorizing, 59 within-by-within-by-within multiple comparisons, 439 WMCD estimator, 250 WMVE estimator, 250 WMWAOV, 357 www.elsevierdirect.com