In: Statistics and Probability
| 
 Salary  | 
 Frequency  | 
| 
 0 to 19,999  | 
 3  | 
| 
 20,000 to 29,999  | 
 7  | 
| 
 30,000 to 39,999  | 
 12  | 
| 
 40,000 to 49,999  | 
 24  | 
| 
 50,000 to 59,999  | 
 17  | 
| 
 60,000 to 69,999  | 
 13  | 
| 
 70,000 to 79,999  | 
 10  | 
| 
 80,000 to 89,999  | 
 8  | 
| 
 90,000 or above  | 
 6  |