Index_M

M

Machine acceptance process

description of, 363

Edlin software, 399 “400

machine warmup, 373 “377

Minitab testing of capability

batch files, 392 “393

check, 390

description of, 388

output file storing and naming, 400 “402

setting up program, 389

SQC loading, 391 “392

typical session, 393 “395

output file storing and naming, 400 “402

overview of, 363 “365

phase I, 373 “377

phase II, 377 “382

phase III, 382 “387

process potential study

design characterizations for, 365 “366

distributions, 368, 370

normal probability paper, 366 “372

process stability and capability, 377 “382

SQC software

data, 397 “399

loading of, 391 “392

output file storing and naming, 400 “402

variable data, 395 “397

supplier grade sheet, 363

suppliers' previous studies, 373 “377

variation, 365

yes/no for acceptance, 382 “387

Machine capability

analysis of

forms for, 244 “248

results, 249 “253

setup verification, 250

definition of, 235

Minitab testing

batch files, 392 “393

check, 390

description of, 388

setting up program, 389

SQC loading, 391 “392

typical session, 393 “395

short- term , 235, 326

Management

commitment to statistical process control, 12

role of, 111

MaxSPA lines, 310 “311

Mean

calculating of, 66, 71 “72, 337

definition of, 65 “66

measures of dispersion for interpreting, 68

Measurement errors

analysis of

analysis of variance, 355 “356

attribute gage study, 342

computer software for, 357 “360

data collection, 333 “341, 346

description of, 333

findings, 342 “344, 356 “357

short-method R&R study, 341 “342

statistical methods and, 345 “357

causes of, 318

concepts regarding, 319 “321

constant, 330

equipment- related , 318

gauge capability, 319 “320, 331

indicators of, 321

part size and, 352

standard deviation of, 331

terminology associated with, 321 “332

variable, 330

Measurement systems

accuracy, 326 “328

assessment of, 320 “321

bias, 328

capability in, 321, 348

components of, 318

control in, 321

description of, 317

discrimination of, 322

environment, 319

equipment for, 318 “319

errors, see Measurement errors

linearity of, 328 “330

overview of, 317 “319

precision of, 322 “323, 327

process nature of, 320

P/T ratio, 331 “332, 354

repeatability , 323 “324

reproducibility , 323 “325

sensitivity of, 322

stability

control charts and, 344 “345

description of, 326

studies of, 321 “322

true value of, 322

uniformity of, 322

variation

description of, 317, 319

special, 320 “321

Measures of central tendency

mean, 65 “66

median, 66 “67

mode, 67

Measures of dispersion

description of, 68

mean interpretation using, 68

range, 68 “69

standard deviation, 69 “72

Median, 66 “67

Median and range chart

advantages and disadvantages of, 179 “180

attribute data, 191 “196

constructing of

control limits, 181 “182, 191

median calculations, 180, 182

process center line, 180 “182

process control analysis, 182 “190

range calculations, 180, 182

recording of measurements, 180

sampling frequency and size, 180

variation, 191

vertical scale, 182

Mesokurtic, 95

Minitab testing, for machine acceptance process

batch files, 392 “393

check, 390

description of, 388

setting up program, 389

SQC loading, 391 “392

typical session, 393 “395

MinSPA lines, 310 “311

Mirror image technique, 301 “305

Mode, 67

Modified controlled charts, 198 “200

Moment tests, 94 “97

Motorola's 6 Sigma

capability, 263 “264

description of, 261 “263

Moving average and moving range chart

description of, 204

nominal, 287 “288

short-run, 289

target, 288

Moving range chart, 145 “147

Multivariate control charts, 210