Control Chart Free Essays

Tables of Constants for Control graphs Table 8A †Variable Data ref : AIAG manual for SPC X bar and R Charts Chart for Averages Control Limits Factor Subgroup size (n) 2 3 4 5 6 7 8 9 10 15 25 A2 1. 880 1. 023 0. We will compose a custom article test on Control Chart or then again any comparable theme just for you Request Now 729 0. 577 0. 483 0. 419 0. 373 0. 337 0. 308 0. 223 0. 153 Chart for Averages Chart for Standard Deviation (s) Chart for Ranges (R) Divisors to Control Estimate Factors for Control gauge Factors for Control Limits Factor Limits ?x d2 1. 128 1. 693 2. 059 2. 326 2. 534 2. 704 2. 847 2. 970 3. 078 3. 472 3. 931 D3 0. 076 0. 136 0. 184 0. 23 0. 347 0. 459 Centerline X bar and R Charts CL X = X CLR = R X bar and s Charts X bar and s outlines CLX = X CL s = s Institute of Quality and Reliability www. world-class-quality. com D4 3. 267 2. 574 2. 282 2. 114 2. 004 1. 924 1. 864 1. 816 1. 777 1. 653 1. 541 A3 2. 659 1. 954 1. 628 1. 427 1. 287 1. 182 1. 099 1. 032 0. 975 0. 789 0. 606 c4 0. 7979 0. 8862 0. 9213 0. 9400 0. 9515 0. 9594 0. 9650 0. 9693 0. 9727 0. 9823 0. 9896 B3 0. 030 0. 118 0. 185 0. 239 0. 284 0. 428 0. 565 Control Limits UCLX = X + A2 R LCL UCLR = D4 R LCL R = D3 R UCLX = X + A3 S LCL X = X ? A3 S UCL s = B4 s LCL s = B 3 s Control Chart Factors X = X ? A2 R B4 3. 267 2. 568 2. 266 2. 089 1. 970 1. 882 1. 815 1. 761 1. 716 1. 572 1. 435 ?x R d2 s c4 Page 1 of 3 Tables of Constants for Control diagrams Table 8B Variable Data ref : AIAG manual for SPC Median Charts Chart for Medians Charts for Individuals Chart for Individuals Chart for Ranges (R) Control Divisors to Limits Estimate Factors for Control Factor Limits ?x Subgroup size 2 3 4 5 6 7 8 9 10 ~ A2 1. 880 1. 187 0. 796 0. 691 0. 548 0. 508 0. 433 0. 412 0. 362 d2 1. 128 1. 693 2. 059 2. 326 2. 534 2. 704 . 847 2. 970 3. 078 D3 0. 076 0. 136 0. 184 0. 223 D4 3. 267 2. 574 2. 282 2. 114 2. 004 1. 924 1. 864 1. 816 1. 777 Centerline CL Median Charts ~ X ~ =X CLR = R Charts for Individuals CL X =X CLR = R Institute of Quality and Reliability www. world-class-quality. com Control Limits Factor E2 2. 660 1. 772 1. 457 1. 290 1. 184 1. 109 1. 054 1. 010 0. 975 Chart for Moving Range (R) Divisors to Estimate Factors for Con trol ?x Limits d2 1. 128 1. 693 2. 059 2. 326 2. 534 2. 704 2. 847 2. 970 3. 078 D3 0. 076 0. 136 0. 184 0. 223 D4 3. 267 2. 574 2. 282 2. 114 2. 004 1. 924 . 864 1. 816 1. 777 Control Limits UCL ~ X ~ = X + A2 R UCLR = D4 R UCL X = X + E 2 R UCLR = D4 R Control Chart Factors LCL ~ X ~ = X ? A2 R LCL R = D3 R LCL X = X ? E 2 R LCL R = D3 R Page 2 of 3 Tables of Formulas for Control outlines Table 8 C Attribute Data ref : AIAG manual for SPC Centerline Control Limits Samples not really of steady size UCL p graph for CL p = p extents of units in a classification pi = p+3 c diagram for number of occurrences in at least one classifications ni LCL p I = p ? 3 p (1 ? p ) ni If the Sample size is steady (n) UCL p = p + 3 np diagram for umber/pace of units in a classification p (1 ? p ) p (1 ? p ) n LCL p = p ? 3 p (1 ? p ) n CL = np UCLnp = np + 3 np(1 ? p) LCLnp = np ? 3 np(1 ? p) CL c = c UCLc = c + 3 c LCLc = c ? 3 c Samples not really of steady size CLu = u diagram for number of rates per unit in at least one classes UCLu = u + 3 LCLu = u ? 3 u ni UCL u = u ? 3 u n UCL u = u ? 3 u n utilizing normal example size UCL u = u + 3 u n If the example size is steady (n) UCL u = u + 3 Institute of Quality and Reliability www. world-class-quality. com u ni u n Control Chart Factors Page 3 of 3 The most effective method to refer to Control Chart, Essay models