Statistical Quality Control, 7th Edition

6 Control Charts for Variables

CHAPTER OUTLINE

6.1   INTRODUCTION

6.2   CONTROL CHARTS FOR AND R

6.2.1   Statistical Basis of the Charts

6.2.2   Development and Use of and R Charts

6.2.3   Charts Based on Standard Values

6.2.4   Interpretation of and R Charts

6.2.5   The Effect of Non-normality on and R Charts

6.2.6   The Operating-Characteristic Function

6.2.7   The Average Run Length for the Chart

6.3   CONTROL CHARTS FOR AND s

6.3.1   Construction and Operation of and s Charts

6.3.2   The and s Control Charts with Variable Sample Size

6.3.3   The s² Control Chart

6.4   THE SHEWHART CONTROL CHART FOR INDIVIDUAL MEASUREMENTS

6.5   SUMMARY OF PROCEDURES FOR , R, AND s CHARTS

6.6   APPLICATIONS ...