Table 7.

The ${\mathit{ARL}}_{2HEPD}\text{and}{\mathit{ASS}}_{2HEPD}$ v values of proposed CC using HEPD when its shape 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 $\to$	$q_1=0.7668437$		$q_1=0.8570$

$r$	${\mathit{ARL}}_{2HEPD}$	${\mathit{ASS}}_{2HEPD}$	${\mathit{ARL}}_{2HEPD}$	${\mathit{ASS}}_{2HEPD}$
1	303.82	24.81	302.44	24.81
1.1	198.94	24.81	129.82	24.81
1.2	142.59	24.81	81.00	24.82
1.3	108.53	24.82	58.21	24.83
1.4	86.19	24.82	45.13	24.84
1.5	70.66	24.82	36.71	24.84
2	34.82	24.85	18.81	24.88
3	16.06	24.89	9.84	24.91
4	10.38	24.91	7.04	24.92
5	7.80	24.92	5.71	24.90