Dataset: dryer_efficiency.dat Source: W.M. To, T.W. Yu, T.M. Lai, S.P. Li (2007). "Characterization of Commercial Clothes Dryers Based on Energy-Efficiency Analysis," International Journal of Clothing Science and Technology, Vol. 19, #5, pp. 270-290. Desription: 3 Replicates each of 3 clothing categories (1=Towels, 2=Jeans, 3=Thermal Clothing) for 4 dryer types (1=Electric Dryer, 2=Bi-directional Electric dryer, 3=Town Gas-Fired Dryer, 4=LPG-Fired dryer) Responses = energy effectiveness (kWh/kg) and standardized cycle time (min) Variables/Columns Clothing Category 8 Dryer Type 16 Energy Effectiveness 18-24 Standardized Cycle Time 28-32