Fuzzy Approach to Statistical Control Charts

Table 3

ARL₁ for different approach when there is a shift equal to 0.5𝜎.

Sample size	Proposed method	Probabilistic Wang	Generalized p Marcucci	α-cut Gulbay
5	1.091	14.983	27.911	33.54
10	1.001	5.373	21.276	24.83
15	1.047	3.362	6.573	7.01
20	1.032	2.531	5.217	5.35
50	1.017	1.73	1.525	1.62