Choosing the Right Spatial Weighting Matrix in a Quantile Regression Model

Table 1

Description of variables.

Variable	Description
MEDV	Median values of owner-occupied housing in thousands of USD
LON	Tract point longitude in decimal degrees
LAT	Tract point latitude in decimal degrees
CRIM	Per capita crime
ZN	Proportion of residential land zoned for lots over 25,000 sq. ft per town
INDUS	Proportion of nonretail business acres per town
CHAS	An indicator: 1 if tract borders Charles River; 0 otherwise
NOX	Nitric oxides concentration (parts per 10 million) per town
RM	Average number of rooms per dwelling
AGE	Proportions of owner-occupied units built prior to 1940
DIS	Weighted distance to five Boston employment centres
RAD	Index of accessibility to radial highways per town
TAX	Property-tax rate per USD 10,000 per town
PTRATIO	Pupil-teacher ratio per town
B	Calculated as 1000*(Bk−0.63)^2 where Bk is the proportion of blacks
LSTAT	Percentage of lower status population