These data, reported by Proschan (1963, Technometrics 5, 375-383), refer to the intervals, in service-hours, between failures of the air-conditioning equipment in a Boeing 720 aircraft. (Proschan reports data on 10 different aircraft. The data from only one of the aircraft is used here. Cox and Snell (1981, Applied Statistics: principles and examples, Chapman and Hall, London) discuss the analysis of the data on all 10 aircraft.) The dataset consists of a single vector of data. They are used in the book `Distributions for location, scale and shape: Using GAMLSS in R' to demonstrate the likelihood function and maximum likelihood estimation.
data("aircond")A data frame with 24 observations on the following variable.
airconda numeric vector
Cox and Snell (1981, Applied Statistics: principles and examples, Chapman and Hall, London)
rpanel: Simple interactive controls for R functions using the tcltk package. Journal of Statistical Software, 17, issue 9.
Proschan, F. (1963) Theoretical explanation of observed decreasing failure rate. Technometrics, Vol. 5 no. 3, pp 375-383, Taylor & Francis.