Table 6.

The ${\mathit{ARL}}_{1HEPD}\text{and}{\mathit{ASS}}_{1HEPD}$ values of proposed CC using HEPD when its scale parameter is shifted using $r_{\mathit{oHEPD}}=370\text{and}n=30$.

	$\lambda =2$		$\lambda =4$
Control limits$\to$	${\mathit{UCL}}_1=$ 19.6406 ${\mathit{LCL}}_1=11.565$	${\mathit{UCL}}_2=$ 19.2127 ${\mathit{LCL}}_2=$ 11.993	${\mathit{UCL}}_1=$ 18.868 ${\mathit{LCL}}_1=$ 10.291	${\mathit{UCL}}_2=$ 18.321 ${\mathit{LCL}}_2=$ 10.838
Control coefficient $\to$	$W_1=1.4754$	$W_2=1.3191$	$W_1=$ 1.5665	$W_2=$ 1.366857
Truncated constant $\to$	$q_1=$ 0.7561		$q_1=$ 0.908059

$e$	${\mathit{ARL}}_{1HND}$	${\mathit{ASS}}_{1HND}$	${\mathit{ARL}}_{1HEPD}$	${\mathit{ASS}}_{1HEPD}$
1	376.80	33.46	374.85	33.48
0.97	71.90	33.61	65.45	33.66
0.95	40.42	33.75	35.24	33.84
0.93	25.80	33.92	21.70	34.05
0.90	14.94	34.22	12.00	34.42
0.85	7.24	34.76	5.49	35.03
0.80	4.04	35.15	2.97	35.27
0.70	2.52	35.12	1.86	34.69
0.60	1.75	34.45	1.35	33.28
0.50	1.14	31.83	1.03	30.51
0.10	1.01	30.20	1.00	30.00