clear all
close all
clc

load wage2.mat;

%   Obs:   935

data = wage;

%   1. wage                     monthly earnings
%   2. hours                    average weekly hours
%   3. IQ                       IQ score
%   4. KWW                      knowledge of world work score
%   5. educ                     years of education
%   6. exper                    years of work experience
%   7. tenure                   years with current employer
%   8. age                      age in years
%   9. married                  =1 if married
%  10. black                    =1 if black
%  11. south                    =1 if live in south
%  12. urban                    =1 if live in SMSA
%  13. sibs                     number of siblings
%  14. brthord                  birth order
%  15. meduc                    mother's education
%  16. feduc                    father's education
%  17. lwage                    natural log of wage

wage    = data(:,1);
hours   = data(:,2);
IQ      = data(:,3);
KWW     = data(:,4);
educ    = data(:,5);
exper   = data(:,6);
tenure  = data(:,7);
age     = data(:,8);
married = data(:,9);
black   = data(:,10);
south   = data(:,11);
urban   = data(:,12);
sibs    = data(:,13);
brthord = data(:,14);
meduc   = data(:,15);
feduc   = data(:,16);
lwage   = data(:,17);