Research Article
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 |
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