> # summary analysis of fire fighters data
> summary(firefighter)
 Employee Identifier     Job               Salaries         Overtime      Other Salaries    Total Salary      
 Min.   :   67       Length:912         Min.   :     0   Min.   :     0   Min.   :     0   Min.   :    12.09  
 1st Qu.:12780       Class :character   1st Qu.: 81213   1st Qu.:  5072   1st Qu.:  7715   1st Qu.:107560.07  
 Median :29510       Mode  :character   Median :118185   Median : 17528   Median : 16491   Median :147146.52  
 Mean   :28465                          Mean   : 97750   Mean   : 24584   Mean   : 14616   Mean   :136949.44  
 3rd Qu.:42704                          3rd Qu.:119259   3rd Qu.: 37851   3rd Qu.: 19989   3rd Qu.:172070.44  
 Max.   :56956                          Max.   :158200   Max.   :132729   Max.   :102334   Max.   :271194.59  
   Retirement    Health/Dental   Other Benefits    Total Benefits     Total Compensation 
 Min.   :    0   Min.   :    0   Min.   :   0.18   Min.   :    0.18   Min.   :    12.27  
 1st Qu.:15787   1st Qu.:15742   1st Qu.:2039.09   1st Qu.:34212.07   1st Qu.:141940.08  
 Median :22900   Median :16823   Median :2496.17   Median :42083.11   Median :189170.61  
 Mean   :19195   Mean   :14829   Mean   :2416.43   Mean   :36440.43   Mean   :173389.87  
 3rd Qu.:23428   3rd Qu.:16977   3rd Qu.:2962.63   3rd Qu.:43275.88   3rd Qu.:215118.08  
 Max.   :28913   Max.   :17131   Max.   :4598.21   Max.   :48121.26   Max.   :316195.42  
> # descriptive statistics for police data
> summary(police)
 Employee Identifier     Job               Salaries         Overtime       Other Salaries     Total Salary   
 Min.   :    6       Length:889         Min.   :     0   Min.   :    0.0   Min.   :    0.0   Min.   :     0  
 1st Qu.:14330       Class :character   1st Qu.: 47528   1st Qu.:  724.7   1st Qu.:  848.1   1st Qu.: 53451  
 Median :28097       Mode  :character   Median : 84938   Median : 5654.8   Median : 4202.2   Median : 95032  
 Mean   :28606                          Mean   : 71415   Mean   : 8965.2   Mean   : 4854.9   Mean   : 85235  
 3rd Qu.:42819                          3rd Qu.: 88124   3rd Qu.:11537.4   3rd Qu.: 7546.2   3rd Qu.:111490  
 Max.   :57025                          Max.   :149168   Max.   :88976.0   Max.   :32572.0   Max.   :239218  
   Retirement    Health/Dental   Other Benefits Total Benefits     Total Compensation
 Min.   :    0   Min.   :    0   Min.   :   0   Min.   :   10.44   Min.   :   100.6  
 1st Qu.: 8892   1st Qu.: 7202   1st Qu.:1623   1st Qu.:18602.84   1st Qu.: 72268.3  
 Median :15542   Median :12347   Median :2081   Median :30660.64   Median :126645.4  
 Mean   :12992   Mean   :10398   Mean   :2342   Mean   :25731.72   Mean   :110966.9  
 3rd Qu.:16390   3rd Qu.:13890   3rd Qu.:3394   3rd Qu.:32538.37   3rd Qu.:143007.2  
 Max.   :27897   Max.   :13890   Max.   :5819   Max.   :44460.49   Max.   :277685.4  
>