Index_N

N

Narrow-limit gaging, 209

Natural process limits, 106

Nominal group technique, 29

Nonconformance, 31

Nonconforming units, 276, 295

Nonmanufacturing

metrics, 406

overview of, 405

process improvement, 410

reaction vs. project planning, 407

statistical process control

criteria for success, 405 “407

implementation strategy, 408 “409

statistical inventory control, 410 “417

tools, 409

Normal distribution

area under normal curve, 74, 79, 426 “429

capability sheet, 462

characteristics of, 73 “75

control charts and, relationship between, 113 “114

curvature of, 73 “74

description of, 73

mean of, 73

moment tests for, 94 ”97

overview of, 73

standard deviation, 69

standardized values, 75 “78

Normality

Anderson-Darling test for, 92 “94

chi-square goodness-of-fit test for, 86 “90

Shapiro-Wilk W test for, 83

testing for, 421

Normal probability paper, 366 “372

NP chart

construction of, 162 “165

control limits, 163 “165

description of, 162

np plot point, 289

Numerical distributions, 49, 52