Factors for Calculating Three-Sigma Limits for the Chart and R-Chart Factor for UCL and LCL for x-bar-Charts A2 1.88 1.023 0.729 0.577 0.483 0.419 0.373 0.337 0.308 Size of Sample (n) 1 2 4 5 6 7 8 19 2 3 10 4 5 6 7 8 9 10 [Select] Source: 1950 ASTM Manual on Quality Control of Materials, copyright American Society for Testing Materials. Reprinted with permission. Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. Calculate control limits for a chart that will monitor performance to target. Sample # Observation 1 Observation 3 0.486 0.499 0.496 0.495 0.472 0.473 0.495 0.525 0.497 0.495 Factors for LCL for R-Charts D3 B) What is the Average Range R? [Select] Observation 2 0.499 0.506 0.500 0.506 0.502 0.495 0.512 0.501 0,501 0.505 A)What is the Central Line of the control chart (X)? 0 0 0 0 0 0.076 0.136 0.184 0.223 C) What is the upper control limit of your R-chart? [Select] Factors for UCL for R-Charts D4 3.267 2.575 2.282 2.115 2.004 1.924 1.864 1.816 1.777 0.493 0.516 0.515 0.483 0.526 0.507 0,49 0.498 0.517 0.516 Observation 4 0.511 0.494 0.488 0.487 0.469 0.493 0.471 0.474 0.506 0.511

Factors for Calculating Three-Stima Bimits for the Chart and R-Chart Source: 1950 ASTMManuel on Quallity Control of Moterlals, copyright Anerican Society for Testing Materlals. Reprinted with permission. Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the tabie. Calculate control limits for a chart that will monitor performance to target. WWhat is the Central Wine of the control chart (x) ? B) What is the Average Range R ? C. What is the upper control Ilmit of your A-chart