nuclear {SMPracticals} | R Documentation |
Nuclear Power Station Construction Data
Description
The data relate to the construction of 32 light water reactor
(LWR) plants constructed in the U.S.A in the late 1960's and
early 1970's. The data was collected with the aim of predicting
the cost of construction of further LWR plants. 6 of the power
plants had partial turnkey guarantees and it is possible that, for
these plants, some manufacturers' subsidies may be hidden in the
quoted capital costs.
Usage
data(nuclear)
Format
A data frame with 32 observations on the following 11 variables.
- cost
- The capital cost of construction in millions of dollars
adjusted to 1976 base.
- date
- The date on which the construction permit was issued. The
data are measured in years since January 1 1990 to the
nearest month.
- t1
- The time between application for and issue of the
construction permit.
- t2
- The time between issue of operating license and construction
permit.
- cap
- The net capacity of the power plant (MWe).
- pr
- A binary variable where `1' indicates the prior existence of
a LWR plant at the same site.
- ne
- A binary variable where `1' indicates that the plant was
constructed in the north-east region of the U.S.A.
- ct
- A binary variable where `1' indicates the use of a cooling
tower in the plant.
- bw
- A binary variable where `1' indicates that the nuclear steam
supply system was manufactured by Babcock-Wilcox.
- cum.n
- The cumulative number of power plants constructed by each
architect-engineer.
- pt
- A binary variable where `1' indicates those plants with
partial turnkey guarantees.
Source
Cox, D.R. and Snell, E.J. (1981) Applied Statistics: Principles
and Examples. Chapman and Hall.
References
Davison, A. C. (2003) Statistical Models. Cambridge University Press.
Page 401.
Examples
data(nuclear)
pairs(nuclear)
fit <- lm(log(cost)~date+t1+t2+cap+pr+ne+ct+bw+cum.n+pr,data=nuclear)
step(fit) # stepwise model selection
[Package
SMPracticals version 1.3
Index]