##       wage              educ           exper       race     smsa    
##  Min.   :  50.39   Min.   : 0.00   Min.   :-2.00   0:1844   0: 488  
##  1st Qu.: 308.64   1st Qu.:12.00   1st Qu.: 8.00   1: 156   1:1512  
##  Median : 522.32   Median :12.00   Median :15.00                    
##  Mean   : 608.12   Mean   :13.11   Mean   :18.41                    
##  3rd Qu.: 783.48   3rd Qu.:16.00   3rd Qu.:27.00                    
##  Max.   :7716.05   Max.   :18.00   Max.   :59.00                    
##  ne       mw       so       we       pt      
##  0:1542   0:1503   0:1375   0:1580   0:1815  
##  1: 458   1: 497   1: 625   1: 420   1: 185  
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