Abstract

We propose a risk index naturally suitable in quality-control framework characterized by data often collected on ordinal scale, to measure the risk of failure of a product. A so-called Severity Index is defined on the basis of the relative frequencies of the ordinal variables. We examine the distribution and the statistical properties of its estimator. We apply the index to real data concerning the severity and the occurrence of defectiveness of the products of a multinational corporation manufacturer. Our index may be employed to communicate the level of risk, to compare among different risks and to identify interventions in the production system.
Titolo tradotto del contributo[Autom. eng. transl.] A risk index to evaluate the criticality of a product defectiveness
Lingua originaleItalian
Titolo della pubblicazione ospiteSIS 2017 Statistics and Data Science: new challenges, new generations
Pagine399-403
Numero di pagine5
Stato di pubblicazionePubblicato - 2017
EventoSIS 2017 Statistics and Data Science: new challenges, new generations - FIRENZE -- ITA
Durata: 28 giu 201730 giu 2017

Convegno

ConvegnoSIS 2017 Statistics and Data Science: new challenges, new generations
CittàFIRENZE -- ITA
Periodo28/6/1730/6/17

Keywords

  • categorical variables
  • failure modes and effects analysis
  • risk index

Fingerprint

Entra nei temi di ricerca di 'A risk index to evaluate the criticality of a product defectiveness'. Insieme formano una fingerprint unica.

Cita questo