Table 3.

The ${\mathit{ARL}}_{1HEPD}\text{and}{\mathit{ASS}}_{1HEPD}$ values of proposed CC using HEPD when its scale parameter is shifted using $r_{\mathit{oHEPD}}=300\text{and}n=20$.

	$\lambda =2$		$\lambda =4$
Control Limits$\to$	${\mathit{UCL}}_1=$ 11.9733 ${\mathit{LCL}}_1=$ 6.4012	${\mathit{UCL}}_2=$ 11.9713 ${\mathit{LCL}}_2=$ 6.4032	${\mathit{UCL}}_1=11.921$ ${\mathit{LCL}}_1=$ 6.453	${\mathit{UCL}}_2=11.709$ ${\mathit{LCL}}_2=6.6651$
Control Coefficient $\to$	$W_1=$ 1.2500	$W_2=$ 1.2492	$W_1=1.2268$	$W_2=1.1318$
Truncated Constant $\to$	$q_1=0.7668437$		$q_1=0.8570$

$e$	${\mathit{ARL}}_{1HEPD}$	${\mathit{ASS}}_{1HEPD}$	${\mathit{ARL}}_{1HEPD}$	${\mathit{ASS}}_{1HEPD}$
1	303.82	24.81	302.44	24.81
0.97	41.01	24.84	36.88	24.84
0.95	23.53	24.87	20.80	24.87
0.93	15.58	24.89	13.59	24.90
0.90	9.61	24.92	8.24	24.92
0.85	5.20	24.89	4.37	24.85
0.80	3.24	24.70	2.69	24.52
0.70	2.23	24.25	1.85	23.84
0.60	1.67	23.51	1.41	22.82
0.50	1.16	21.58	1.06	20.75
0.10	1.02	20.28	1.00	20.03