1. Title	Boston Housing Data

2. Sources	http://www1.ics.uci.edu/~mlearn/MLSummary.html [Housing Database]

3. Number of Instances: 506

4. Number of Attributes: 13 continuous attributes (including "class"
                         attribute "MEDV"), 1 binary-valued attribute.

5. Attribute Information:

   Variable	Size
   ---------------------
   Housing	366x13
   Class	366x1


   Housing:
   
    1. CRIM      per capita crime rate by town
    2. ZN        proportion of residential land zoned for lots over 
                 25,000 sq.ft.
    3. INDUS     proportion of non-retail business acres per town
    4. CHAS      Charles River dummy variable (= 1 if tract bounds 
                 river; 0 otherwise)
    5. NOX       nitric oxides concentration (parts per 10 million)
    6. RM        average number of rooms per dwelling
    7. AGE       proportion of owner-occupied units built prior to 1940
    8. DIS       weighted distances to five Boston employment centres
    9. RAD       index of accessibility to radial highways
    10. TAX      full-value property-tax rate per $10,000
    11. PTRATIO  pupil-teacher ratio by town
    12. B        1000(Bk - 0.63)^2 where Bk is the proportion of blacks 
                 by town
    13. LSTAT    % lower status of the population

   Class:
   
    1. MEDV     Median value of owner-occupied homes in $1000's
    
8. Missing attribute values:   None.