Table 5.

The ${\mathit{ARL}}_{1HEPD}\text{and}{\mathit{ASS}}_{1HEPD}$ values of proposed CC using HEPD when its scale parameter is shifted using $r_{\mathit{oHEPD}}=370\text{and}n=20$.

	$\lambda =2$		$\lambda =4$
Control limits$\to$	${\mathit{UCL}}_1=$ 12.953 ${\mathit{LCL}}_1=7.347$	${\mathit{UCL}}_2=$ 12.328 ${\mathit{LCL}}_2=7.973$	${\mathit{UCL}}_1=$ 11.5427 ${\mathit{LCL}}_1=$ 6.8149	${\mathit{UCL}}_2=$ 11.4215 ${\mathit{LCL}}_2=$ 6.9361
Control coefficient $\to$	$W_1=$ 1.2538	$W_2=$ 0.9740	$W_1=$ 1.0607	$W_2=1.0064$
Truncated constant $\to$	$q_1=0.8602$		$q_1=0.8561$

$e$	${\mathit{ARL}}_{1HEPD}$	${\mathit{ASS}}_{1HEPD}$	${\mathit{ARL}}_{1HEPD}$	${\mathit{ASS}}_{1HEPD}$
1	373.85	24.84	373.27	24.81
0.97	42.83	24.88	38.11	24.84
0.95	23.98	24.91	21.27	24.87
0.93	15.60	24.94	13.82	24.90
0.90	9.43	24.97	8.35	24.92
0.85	5.00	24.95	4.41	24.85
0.80	3.08	24.72	2.71	24.53
0.70	2.11	24.21	1.86	23.85
0.60	1.58	23.38	1.42	22.83
0.50	1.13	21.36	1.06	20.75
0.10	1.01	20.19	1.00	20.03