Maintenance cost versus age of cash registers in a department store

Data for Exercise 2.3, 2.39, and 2.54

Register

Format

A data frame/tibble with nine observations on two variables

age

age of cash register (in years)

cost

maintenance cost of cash register (in dollars)

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples

plot(cost ~ age, data = Register)
model <- lm(cost ~ age, data = Register)
abline(model, col = "red")

predict(model, newdata = data.frame(age = c(5, 10)))
#>         1         2 
#>  98.89189 213.90878 
plot(model, which = 1)

rm(model)