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THE ROUTINE CONTROL OF QUALITY
Theory of the Control Chart
Practical Application of the Control Chart Procedure
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accepted analysis of variance apply arrangement assignable causes assumptions average bricks calculated cast cent Chapter consumer's control chart control limits correlation corresponding cost cotton curve degrees of freedom determine difference discs economical equation error variance example experiment fraction defective frequency distribution give given grand mean inspection investigation kiln large number Latin square leas level of significance lime consumption loom machine mean range mean square measure mule number of observations pairs percentage of pig pig iron plotted population mean practical probability level procedure production quality control random variation randomised rational sub-groups regression residual risk sample mean sampling distribution sampling scheme single-factor specific gravity spindle standard deviation standard error statistical individuals statistical theory statistically significant sum of squares Table VIII Table XXVI taken technical three-sigma limits tion treatment means two-factor values variability Warp Breakage Rates yarn yield point