Report on the CECED dishwasher ringtest - Institut für Landtechnik ...

6.2 Drying outliers CECED DW Ringtest
Table 6: Grubb’s test for the cleaning runs
Cleaning runs Grubbs test
H performance Low performance R performance H ratio
L ratio
Max 4,460 Lab 16 4,100 Lab 05 4,480 Lab 16 1,231 Lab 05 0,984 Lab11
5,429 (**outlier) 5,475 (**outlier) 8,436 (**outlier) 5,006 **outlier 1,642
Min 3,320 Lab 09 2,990 Lab 09 3,370 Lab 07 0,973 Lab 09 0,856 Lab 15
5,889 (**outlier) 3,253 (**outlier) 3,269 (**outlier) 2,801 *straggler 1,815
crit. Val. **1% 2,968 *5% 2,681 p=19
Table 7: Cochran’s test for the cleaning runs
Cochran´ test
H perf L perf R perf H ratio L ratio
Max. 0,058 0,074 0,044 0,0035 0,0058
statistic c 0,234 0,197 0,183 0,143 0,175
Lab 01 Lab 12 Lab 05 Lab 05
(*straggler)
crit. Values **1% 0,238 n=5
*5% 0,200 p=19
Table 8: Grubb’s test for the drying runs
Drying runs Grubb's test
H performance Low performance R performance H ratio
L ratio
Max 0,990 Lab 16 0,930 Lab 05 0,940 Lab 16 1,191 Lab 11 1,055 Lab 11
4,419 (**outlier) 7,460 (**outlier) 4,913 (**outlier) 4,528 **outlier 5,595 **outlier
Min 0,850 Lab 09 0,630 Lab 09 0,750 Lab 07 1,019 Lab 15 0,754 Lab 06
4,419 (**outlier) 6,383 (**outlier) 7,175 (**outlier) 1,867 4,521 (**outlier)
crit. Val. **1% 2,968 *5% 2,681
Table 9: Cochran’s test for the drying runs
Drying runs Cochran's test
H perf L perf R perf H ratio L ratio
max 0,001 0,0025 0,0010 0,0022 0,0031
statistics 0,161 0,240 0,188 0,138 0,155
Lab 02 Lab 06 Lab 05 Lab 05 Lab 07
(**outlier)
crit. Values**1% 0,238 p=19
*5% 0,200 n=5
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