Research Article

An Improvement of the Hotelling Statistic in Monitoring Multivariate Quality Characteristics

Table 4

The number of correctly detected outliers and the number of detected outliers for and .

ncpEmpr UCLMed-Mad UCL

(5%) 5 outliers50 (0)
15
25
35
45
55 5 (11)

(10%) 10 outliers50 (0)
150 (0)
250 (0)
350 (0)
450 (0)
550 (0) 10 (15)

(15%) 16 outliers50 (0)
150 (0)
250 (0)
350 (0)
450 (0)
550 (0) 16 (20)

(20%) 20 outliers50 (0)
150 (0)
250 (0)
350 (0)
450 (0)
550 (0)