TABLE $6$E$.13$

Layer Thickness Data for Exercise $6\mathrm{.}26$

UCL$=ar(\stackrel{}{x})+\frac{A_2}{b}ar(R)$

UCL$=\frac{D_4}{b}ar(R)$

Center line $=\stackrel{}{x}$

Center line $=ar(R)$

$LCL=\stackrel{}{x}-\frac{A_2}{b}ar(R)$

$LCL=D_{3}ar(R)$