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A ranking order (also ranking , ranking list , ranking [ ˈræŋkɪŋ ]) is a sequence of several comparable objects, the sorting of which determines a rating . Popular examples are world rankings in sports and music charts .


The one-dimensional arrangement of a ranking simplifies the comparison and the making of a selection: in search engine ranking, results of a search query are sorted according to their relevance . Rankings can be created according to simple, even controversial, criteria or as the result of complex comparative studies. Often their sequences represent components of hierarchies . A specific position in a ranking is also referred to as a placement .


Further examples:

Statistical analysis of rankings

The investigation of rank orders with the help of statistics ( rank order statistics , for example with the help of the Wilcoxon rank sum test ) offers significant advantages in many cases compared to the analysis of the raw data with the t-test , because rank tests are much more robust against extreme values ​​and nonlinearities. By forming ranks, the units to be examined are brought into an ordinal scale ; the amounts of the absolute differences between neighboring values ​​then have less of an impact on the test result, which increases the ability to prove significance , especially in the case of multi-peak distributions of the raw data .

Rankings are usually based on several criteria that are offset against each other to form an overall value. This results in the fundamental problem that the accounting method can significantly influence the result.

See also


Individual evidence

  1. Dominik Rohn, Karsten Weihe : Are rankings inherently arbitrary? Research & Teaching , No. 9/2013, pp. 740–741, online version in Wissenschaftsmanagement Online .
  2. ^ Ralf Lisch : Measuring Service Performance - Practical Research for Better Quality. Routledge, Farnham 2014, ISBN 978-1-47241-191-4 , pp. 82-91.