number of observations : 250
observation : households
country : California
A dataframe containing :
heating system, one of gcc (gas central heat with cooling), ecc (electric central resistence heat with cooling), erc (electric room resistence heat with cooling), hpc (electric heat pump which provides cooling also), gc (gas central heat without cooling, ec (electric central resistence heat without cooling), er (electric room resistence heat without cooling)
installation cost of the heating portion of the system
installation cost for cooling
operating cost for the heating portion of the system
operating cost for cooling
annual income of the household
Kenneth Train's home page : http://elsa.berkeley.edu/~train/.
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