field.concrete {SMPracticals} | R Documentation |
Data from a 4x4 Latin square experiment on the efficiency of a field concrete mixer.
data(field.concrete)
A data frame with 16 observations on the following 4 variables.
Unpublished lecture notes, Imperial College, London.
Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 435.
data(field.concrete) fit <- lm(efficiency~run+day+speed,data=field.concrete) anova(fit) summary(fit) fit <- lm(efficiency~run+day+poly(as.numeric(speed),3),data=field.concrete) summary(fit)