Dataset: nigeria_singapore_hotel.csv Sources: Oluseyi, P.O., O.M. Babatunde, O.A. Batatunde (2016). "Assessment of Energy Consumption and Carbon Footprint from the Hotel Sector Within Lagos, Nigeria," Energy and Buildings, Vol. 118, pp. 106-113. Priyadarsini, R. W. Xuchao, L.S. Eang (2009). "A Study on Energy Performance of Hotel Buildings in Singapore," Energy and Buildings, Vol. 41, pp. 1319-1324. Description: Data on annual energy consumption, floor area, and number of employees for 27 Lagos and 28 Singapore hotels. Variables: city (1=Lagos, 2=Singapore) hotel.ID (within city) year.EC (annual energy consumption, MWh) flr.area (square meters) employees