Research Article

A New Nonparametric Multivariate Control Scheme for Simultaneous Monitoring Changes in Location and Scale

Table 5

OC ARL values of these charts for various when and zero-state under other types of distribution.

TypeS-WS-MDProposedS-WS-MDProposedS-WS-MDProposed

50
143.1126.137.510.2103.29.44.5252.16.9
213.364.48.14.75.52.83.610.72.4
311.8597.74.75.52.83.510.32.4

100
143129.641.110.1104.89.424.4238.96.7
212.765.47.74.85.82.73.410.52.4
312.554.57.94.65.62.73.610.42.4

200
142.9132.939.110.7109.79.24.7243.36.9
213.461.58.14.85.72.83.410.22.3
31258.884.75.72.83.510.62.4

1: multivariate with 3 distribution; 2: multivariate gamma distribution; 3: multivariate exponential distribution.