On a bounded bimodal two-sided distribution fitted to the Old-Faithful geyser data

Donatella Vicari and Johan Ren� van Dorp

Journal of Applied Statistics, 2013, vol. 40, issue 9, 1965-1978

Abstract: In this paper, we shall develop a novel family of bimodal univariate distributions (also allowing for unimodal shapes) and demonstrate its use utilizing the well-known and almost classical data set involving durations and waiting times of eruptions of the Old-Faithful geyser in Yellowstone park. Specifically, we shall analyze the Old-Faithful data set with 272 data points provided in Dekking et al. [3]. In the process, we develop a bivariate distribution using a copula technique and compare its fit to a mixture of bivariate normal distributions also fitted to the same bivariate data set. We believe the fit-analysis and comparison is primarily illustrative from an educational perspective for distribution theory modelers, since in the process a variety of statistical techniques are demonstrated. We do not claim one model as preferred over the other.

Date: 2013
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DOI: 10.1080/02664763.2013.800036

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