ex04.86 {Devore6} | R Documentation |
The ex04.86
data frame has 20 rows and 1 columns of bearing
load lifetimes.
This data frame contains the following columns:
Devore, J. L. (2003) Probability and Statistics for Engineering and the Sciences (6th ed), Duxbury
(1984) "The load-life relationship for M50 bearings with silicon nitrate ceramic balls", Lubrication Engineering, 153–159.
data(ex04.86) attach(ex04.86) boxplot(loadlife, ylab = "Load-Life (million revs)", main = "Bearing load-lifes from exercise 4.86", col = "lightgray") ## Normal probability plot qqnorm(loadlife, ylab = "Load-life (million revs)") qqline(loadlife) ## Weibull probability plot plot( log(-log(1 - (seq(along = loadlife) - 0.5)/length(loadlife))), log(sort(loadlife)), xlab = "Theoretical Quantiles", ylab = "log(load-life) (log(million revs))", main = "Weibull Q-Q Plot", las = 1) detach()