Class | 25-35 | 35-45 | 45-55 | 55-65 | 65-75 |
Frequency | 6 | 10 | 8 | 12 | 4 |
Class |
Frequency |
Mid values |
|
25-35 |
6 |
30 |
180 |
35-45 |
10 |
40 |
400 |
45-55 |
8 |
50 |
400 |
55-65 |
12 |
60 |
720 |
65-75 |
4 |
70 |
280 |
|
|
|
|