For Exercises 29–32, use the trade balance data from Table 26. Use eight classes with class widths equal to 1. Let the leftmost class be: −6 to < −5.
31. Construct a frequency distribution.
2.2.31
| Trade balance | Frequency | Relative frequency |
|---|---|---|
| –6 to < –5 | 2 | 2/9 = 0.2222 |
| –5 to < –4 | 0 | 0/9 = 0.0000 |
| –4 to < –3 | 0 | 0/9 = 0.0000 |
| –3 to < –2 | 1 | 1/9 = 0.1111 |
| –2 to < –1 | 4 | 4/9 = 0.4444 |
| –1 to < 0 | 0 | 0/9 = 0.0000 |
| 0 to < 1 | 1 | 1/9 = 0.1111 |
| 1 to < 2 | 1 | 1/9 = 0.1111 |
| Total | 9 | 9/9 = 1.0000 |