| N | Mean efficiency | Std. deviation | Std. error | 95% Confidence interval for mean | Min. | Max. | ||
Lower bound | Upper bound | ||||||||
No-baffles | 10 | 29.00 | 1.93129 | 0.61073 | 27.5084 | 30.2716 | 28.20 | 30.40 | |
2-baffles | 7 | 29.214 | 1.91349 | 0.72323 | 27.4446 | 30.9840 | 29.10 | 31.70 | |
3-baffles | 10 | 31.290 | 2.34400 | 0.74124 | 29.6132 | 32.9668 | 29.80 | 34.80 | |
4-baffles | 10 | 33.140 | 2.67798 | 0.84685 | 31.2243 | 35.0557 | 30.30 | 38.70 | |
8-baffles | 3 | 33.700 | 3.77227 | 2.17792 | 24.3292 | 43.0708 | 30.60 | 37.90 | |
Total | 40 | 30.970 | 2.92340 | 0.46223 | 30.0351 | 31.9049 | 26.10 | 38.70 | |
Model | Fixed effects |
|
| 2.37842 | 0.37606 | 30.2066 | 31.7334 |
|
|
Random effects |
|
|
| 0.97645 | 28.2589 | 33.6811 |
|
|