# Info on Boston Housing Data Base

    1. Title: Boston Housing Data

    2. Sources:
       (a) Origin:  This dataset was taken from the StatLib library which is
                    maintained at Carnegie Mellon University.
       (b) Creator:  Harrison, D. and Rubinfeld, D.L. 'Hedonic prices and the
                     demand for clean air', J. Environ. Economics & Management,
                     vol.5, 81-102, 1978.
       (c) Date: July 7, 1993

    3. Past Usage:
       -   Used in Belsley, Kuh & Welsch, 'Regression diagnostics ...', Wiley,
           1980.   N.B. Various transformations are used in the table on
           pages 244-261.
        -  Quinlan,R. (1993). Combining Instance-Based and Model-Based Learning.
           In Proceedings on the Tenth International Conference of Machine
           Learning, 236-243, University of Massachusetts, Amherst. Morgan
           Kaufmann.

    4. Relevant Information:

       Concerns housing values in suburbs of Boston.

    5. Number of Instances: 506

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

    7. Attribute Information:

        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
        14. MEDV     Median value of owner-occupied homes in $1000's

    8. Missing Attribute Values:  None.