Research Article

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

Table 12

ARLs for proposed repetitive EWMA-RSS control chart using Khan et al. [8] exponential ratio-type estimator, when is 370.

shift = 3.0025, = 2.6008, λ = 0.3

f = 0.25 = 0.50 = 0.90

0370.98370.98370.98

0.01345.45340.04255.68

0.02283.01268.31121.48

0.03214.45194.7456.47

0.04156.62136.6727.79

0.05113.0795.3214.63

0.1024.5718.491.75

0.157.145.161.04

0.202.842.131.00

0.251.581.311.00

0.301.171.081.00

0.351.051.011.00

0.401.001.001.00

0.51.001.001.00