Table 5: Serum BUN values (mg/dL) from hospital employees at Kettering Medical Center 15.9 | 22.5 | 9.1 | 16.8 |
6.4 | 28.6 | 15.2 | 23.7 |
10.3 | 17.0 | 13.8 | 20.5 |
7.4 | 25.0 | 4.1 | 18.4 |
12.7 | 13.6 | 30.9 | 21.3 |
Use the following classes: 0-5, 5-10, 10-15, 15-20, 20-25, 25-30, 30-35. What is the absolute frequency of the class 15-20?
Please select the single best answer