The time taken to deliver soft drinks to vending machines
data(sdrinks)A data frame containing 25 observations with the following 3 variables.
Timethe time taken to service the soft drink vending machine (in minutes); a numeric vector
Casesthe number of cases of product stocked; a numeric vector
Distancethe distance walked by the driver to service the vending machines (in feet); a numeric vector
A soft drink bottler is analyzing vending machine service routes in his distribution system. He is interested in predicting the amount of time required by the route driver to service the vending machines in an outlet. The service activity includes the time taken to stock the machine with beverage products, and for minor maintenance and housekeeping.
The industrial engineer responsible for the study has suggested that the two most important variables affecting the delivery time are the number of cases of product stocked and the distance walked by the route driver.
D. C. Montgomery and E. A. Peck (1992) Introduction to Regression Analysis. Wiley, New York. Example 4.1