Table 10.

The ${\mathit{ARL}}_{3HEPD}\text{and}{\mathit{ASS}}_{3HEPD}$ values of proposed CC using HEPD when both parameters are 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 $\to$		$q_1=0.8602$		$q_1=0.8561$

$e$	$r$	${\mathit{ARL}}_{3HEPD}$	${\mathit{ASS}}_{3HEPD}$	${\mathit{ARL}}_{3HEPD}$	${\mathit{ASS}}_{3HEPD}$
1	1	373.8	24.8	373.27	24.81
1.1	0.97	35.3	24.9	30.80	24.85
1.2	0.95	18.2	24.9	15.99	24.89
1.3	0.93	11.2	25.0	9.96	24.91
1.4	0.90	6.6	25.0	5.98	24.91
1.5	0.85	3.5	24.8	3.26	24.70
2	0.80	1.9	23.9	1.85	23.82
3	0.70	1.1	20.9	1.10	21.07
4	0.60	1.0	20.0	1.00	20.02
5	0.50	1.0	20.0	1.00	20.00