xmp10.10 {Devore5} | R Documentation |
The xmp10.10
data frame has 18 rows and 2 columns.
This data frame contains the following columns:
Data from a study of travel time for a certain type of wave that results from longitudinal stress of rails used for railroad track.
Devore, J. L. (2000), Probability and Statistics for Engineering and the Sciences (5th ed), Duxbury, Boston, MA.
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York. (Appendix A.26)
(1985), ``Zero-force travel-time parameters for ultrasonic head-waves in railroad rail'', Materials Evaluation, 854-858.
data(xmp10.10) xmp10.10$Rail <- factor(xmp10.10$Rail) boxplot(travel ~ Rail, xmp10.10, col = "lightgray", xlab = "Rail", ylab = "Zero-force travel time (microsec)", main = "Travel times in rails, from example 10.10") fm1 <- lm(travel ~ Rail, data = xmp10.10) anova(fm1)