Exponentially Weighted Moving Average Control Charts for the Process Mean Using Exponential Ratio Type Estimator

Table 1

ARLs for proposed repetitive EWMA-RSS control chart using Bahl and Tuteja (1991) exponential ratio-type estimator, when is 500.

shift	= 3.0958, = 2.339, λ = 0.1
f	= 0.25	= 0.50	= 0.90
0	500.62	500.62	500.62
0.01	425.80	412.09	322.23
0.02	283.38	257.61	137.87
0.03	172.49	148.08	58.59
0.04	103.70	84.95	26.54
0.05	63.24	49.82	12.93
0.10	7.61	5.50	9.39
0.15	1.91	1.51	1.01
0.20	1.12	1.05	1.00
0.25	1.01	1.00	1.00
0.30	1.00	1.00	1.00
0.35	1.00	1.00	1.00
0.40	1.00	1.00	1.00
0.5	1.00	1.00	1.00