4-9 LnagE log of the apparent age of the property NBROOMS number of bedrooms AREABYRM -area per room (in square metres) ELEVATOR a dummy variable l if the building has an elevator: o otherwise BASEMENT a dummy variable =1 if the unit is located in a basement;0 otherwise OUTPARK number of outdoor parking spaces NDPARK number of indoor parking spaces NOLEASE a dummy variable= l if the unit has no lease租借权 attached to it;0 otherwise LndIstcBd log of the distance in kilometres to the central business district SINGLPAR percentage of single parent families in the area where the building stands DSHOPCNTR distance in kilometres to the nearest shopping centre VACDIFFI vacancy difference between the building and the census figure4-9 LnAGE - log of the apparent age of the property NBROOMS - number of bedrooms AREABYRM - area per room (in square metres) ELEVATOR - a dummy variable = 1 if the building has an elevator; 0 otherwise BASEMENT - a dummy variable = 1 if the unit is located in a basement; 0 otherwise OUTPARK - number of outdoor parking spaces INDPARK - number of indoor parking spaces NOLEASE - a dummy variable = 1 if the unit has no lease租借权 attached to it; 0 otherwise LnDISTCBD - log of the distance in kilometres to the central business district SINGLPAR - percentage of single parent families in the area where the building stands DSHOPCNTR - distance in kilometres to the nearest shopping centre VACDIFF1 - vacancy difference between the building and the census figure