ex04.82 {Devore6} | R Documentation |
The ex04.82
data frame has 10 rows and 1 columns of bearing
lifetimes.
This data frame contains the following columns:
Devore, J. L. (2003) Probability and Statistics for Engineering and the Sciences (6th ed), Duxbury
(1985), "Modified Moment Estimation for the three-parameter Log-normal distribution", Journal of Quality Technology, 92–99.
data(ex04.82) attach(ex04.82) boxplot(lifetime, ylab = "Lifetime (hr)", main = "Bearing lifetimes from exercise 4.82", col = "lightgray") ## Normal probability plot on the original time scale qqnorm(lifetime, ylab = "Lifetime (hr)", las = 1) qqline(lifetime) ## Try normal probability plot of the log(lifetime) qqnorm(log(lifetime), ylab = "log(lifetime) (log(hr))", las = 1) qqline(log(lifetime)) detach()