Six Sigma and Beyond: Statistical Process Control, Volume IV

U

U chart

constructing of, 172 “175

uses of, 172

Underlying distributions

analysis of, 78 “81

methods of testing for

chi-square goodness-of-fit test, 85 “91

distance tests, 91 “94

goodness of fit tests, 81

probability plotting, 82

regression tests, 82 “85

Shapiro-Wilk W tests, 83 “85

Uniformity, 322

u plot point, 290 “291

Upper control limit, 103

Upper specification limit, 304, 366 “367