| Testing Variance - Confidence Intervals for Population Variance | ||
| Sample size | 20 | |
| Sample variance | 13 | |
| Confidence interval | 0.65 | |
| Type of Interval | Left tail | Right tail |
| Two-sided confidence interval at 0.65 | 10.0507231153148 | 18.6274799354242 |
| Left one-sided confidence interval at 0.65 | 11.8957262641861 | +inf |
| Right one-sided confidence interval at 0.65 | 0 | 15.3331370921526 |
| more information about confidence interval | ||