The half-half plot

J.H.J. Einmahl, M. Gantner

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Abstract

The Half-Half (HH) plot is a new graphical method to investigate qualitatively the shape of a regression curve. The empirical HH-plot counts observations in the lower and upper quarter of a strip that moves horizontally over the scatterplot. The plot displays jumps clearly and reveals further features of the regression curve. We prove a functional central limit theorem for the empirical HH-plot, with rate of convergence 1/√n . In a simulation study, the good performance of the plot is demonstrated. The method is also applied to two case studies. The proofs and one more case study are deferred to a supplement, which is available online.
Original languageEnglish
Pages (from-to)138-146
JournalTechnometrics
Volume54
Issue number2
DOIs
Publication statusPublished - 2012

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