Robust Statistics

Arbeitspapier

The first example involves the real data given in Table 1 which are the results of an interlaboratory test. The boxplots are shown in Fig. 1 where the dotted line denotes the mean of the observations and the solid line the median. We note that only the results of the Laboratories 1 and 3 lie below the mean whereas all the remaining laboratories return larger values. In the case of the median, 7 of the readings coincide with the median, 24 readings are smaller and 24 are larger. A glance at Fig. 1 suggests that in the absence of further information the Laboratories 1 and 3 should be treated as outliers. This is the course which we recommend although the issues involved require careful thought. For the moment we note simply that the median is a robust statistic whereas the mean is not.

Angaben zum Objekt

• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Series: Papers ; No. 2004,20

Klassifikation und Themen

• Klassifikation: Wirtschaft

Beteiligte, Orts- und Zeitangaben

• Ereignis: Geistige Schöpfung
• (wer): Gather, Ursula ; Davies, P. Laurie
• Ereignis: Veröffentlichung
• (wer): Humboldt-Universität zu Berlin, Center for Applied Statistics and Economics (CASE)
• (wo): Berlin
• (wann): 2004

Weitere Informationen

• Handle: http://hdl.handle.net/10419/22194
• Letzte Aktualisierung: 10.03.2025, 11:44 MEZ