Maintenance cost versus age of cash registers in a department store
Data for Exercise 2.3, 2.39, and 2.54
Register
A data frame/tibble with nine observations on two variables
age of cash register (in years)
maintenance cost of cash register (in dollars)
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
plot(cost ~ age, data = Register) model <- lm(cost ~ age, data = Register) abline(model, col = "red") predict(model, newdata = data.frame(age = c(5, 10))) plot(model, which = 1) rm(model)
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