The time intervals in days between successive coal mining accidents involving more than ten men killed during the period 1851 to 1962 in Great Britain were reported by Jarrett (1979). This dataset is a corrected and extended version of the dataset previously given by Maguire et al. (1952). An exponential distribution has been shown to be a good model for the time between accidents given in Jarrett's data. The number of accidents occurring over a given time period can be looked on as having a Poisson distribution. For the Poisson change-point procedure the data must be binned.

Choose the number of years per bin from the form below.

year per bin.

References:
Jarrett, R. G. (1979). A note on the intervals between coal mining disasters. Biometrika 66 191-193.

Maguire, B. A., Pearson, E.S. and Wynn, A. H. A. (1952). The time intervals between industrial accidents. Biometrika 39 168-180.