Some Comments Regarding the Synthetic (X)over-bar Chart

Autor(es)

Machado, Marcela A. G. ^[1] ; Costa, Antonio F. B. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Dept Prod, Guaratingueta, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: COMMUNICATIONS IN STATISTICS-THEORY AND METHODS; v. 43, n. 14, p. 2897-2906, 2014.
• Citações Web of Science: 13

Resumo

The steady-state average run length (ARL) is a function of the in-control probabilities of being in each nonabsorbing state. Davis and Woodall (2002) tabulated values that are significantly smaller than the steady-state ARLs, because they used the out-of-control probabilities. The synthetic chart signals when a second sample point falls beyond the control limits, no matter whether one of them falls above the centerline and the other falls below it. The side-sensitive version of the synthetic chart does not signal when the points beyond the control limits are on opposite sides. With this rule, the chart detects mean changes more quickly. (AU)

• Processo FAPESP: 08/09922-0 - Gráficos de controle para o monitoramento de processos multivariados
• Beneficiário: Marcela Aparecida Guerreiro Machado de Freitas
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores