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Water Usage of Production Plant

Keywords: multiple regression, best subsets


A production plant cost-control engineer is responsible for cost reduction. One of the costly items in his plant is the amount of water used by the production facilities each month. He decided to investigate water usage by collecting seventeen observations on his plant's water usage and other variables.

Variable Description

Temperature Average monthly temperate (F)
Production Amount of production (M pounds)
Days Number of plant operating days in the month
Persons Number of persons on the monthly plant payroll
Water Monthly water usage (gallons)


Data File (tab-delimited text)


Draper, N.R., and Smith, H. (1981). Applied Regression Analysis. Second Edition. Wiley, New York, page 352.




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