precipitations {ig}R Documentation

Data set

Description

Data set related to the IGTD which is available in the ig package. This data set has been taken from the literature of this topic.

Usage

data(precipitations)

Format

A vector containing 25 observations.

Details

psi21, psi26 and psi31 were taken from Birnbaum and Saunders (1969), who reported fatigue life data correspond to the cycles (times 10^{-3}) of aluminum specimens of type 6061-T6. These specimens were cut in a parallel angle to the direction of rotation and oscillating at 18 cycles per seconds. They were exposed to a pressure with maximum stress of 21,000, 26,000 and 31,000 psi (pounds per square inch), for n = 101, 102, and 101 specimens, respectively.

Other data set names are: repairtimes, shelflife, fracture, precipitations and runoff, which correspond to maintenance data on active repair times (in hours) for an airborne communications transceiver, shelflife (in days) of a food product, fracture toughnesses of welds, precipitation (in inches) and runoff amounts at Jug Bridge, Maryland, respectively.

Author(s)

Víctor Leiva <victor.leiva@uv.cl; victor.leiva@yahoo.com>,
Hugo Hernández <hugo.hernandez.p@gmail.com> and
Antonio Sanhueza <asanhueza@ufro.cl>.

Source

Chhikara, R. S. and Folks, J. L. (1989). The Inverse Gaussian Distribution. Marcel Dekker, New York.


[Package ig version 1.2 Index]