Research Article
The Efficiency of Variance Reduction in Manufacturing and Service Systems: The Comparison of the Control Variates and Stratified Sampling
Table 5
The variances
of ANC.
| Levels | 1.Exponential | 2.Uniform | 3.Triangular | 4.Normal |
| 1.Control
variates | 0.0000001 | 0.0003459 | 0.0000001 | 0.0000002 | 0.0000223 | 0.0000663 | 0.0000007 | 0.0000032 | 0.0129500 | 0.0000000 | 0.0000191 | 0.0000003 |
0.0828200 |
0.0001932 |
0.0000023 |
0.0000010 |
| 2.Stratified
sampling | 0.536 | 0.167 | 0.113 | 5.869 | 1.592 | 0.537 | 0.045 | 2.664 | 0.669 | 0.167 | 0.088 | 2.177 |
0.223 |
0.026 |
0.107 |
1.924 |
|
|