| Testing Variance - Confidence Intervals for Population Variance | ||
| Sample size | 320 | |
| Sample variance | 4.2 | |
| Confidence interval | 0.95 | |
| Type of Interval | Left tail | Right tail |
| Two-sided confidence interval at 0.95 | 3.61744095993594 | 4.93635971376001 |
| Left one-sided confidence interval at 0.95 | 3.70466242131918 | +inf |
| Right one-sided confidence interval at 0.95 | 0 | 4.80868448592078 |
| more information about confidence interval | ||