What does “propensity” add? (English) Zbl 1442.62219

Summary: In [ibid. 31, No. 4, 521–540 (2016; Zbl 1442.62221)], N. D. Singpurwalla addressed the important challenge of modelling a unique individual. He proposes “propensity” as an approach to describing the reliability or life time of “one of a kind”. My view is that mathematical modelling is only possible when we assume that nonunique features provide sufficient information for statistical prediction to be useful. As far as possible, we should test our assumptions. However, contrary to a popular perception of Hume, we always rely on some beliefs.


62N05 Reliability and life testing
62A01 Foundations and philosophical topics in statistics
62P30 Applications of statistics in engineering and industry; control charts


Zbl 1442.62221
Full Text: DOI Euclid


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