The main advantages of variable sampling plans are the existence small sample size for effective decision and receiving good information on quality characteristics. But samples some time may lead to wrong during inspection lot can increase risk producer or consumer. same scenario happen in double triple also due sizes. control professionals suggest multiple when is very large. Hence an attempt ...

Multi-stage sampling designs are often used in household surveys because a frame of elements may not be available or for cost considerations when data collection involves face-to-face interviews. In this context, variance estimation is complex task as it relies on the availability second-order inclusion probabilities at each stage. To cope with issue, several bootstrap algorithms have been prop...