PROC SURVEYSELECT provides a variety of methods for selecting probability-based random samples. With probability sampling, each unit in the survey population has a known, positive probablity of ...

Sampling is a statistical technique used in research to select a subset of individuals or data points from a larger population. This subset, known as a sample, is chosen to represent the ...

1 Department of Palaentology and Museum, University of Zurich, Zurich, Switzerland 2 Centre of Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Oslo, Norway The ...

ABSTRACT: Coverage of nominal 95% confidence intervals of a proportion estimated from a sample obtained under a complex survey design, or a proportion estimated from a ratio of two random variables, ...

ABSTRACT: One of the key assumptions in respondent-driven sampling (RDS) analysis, called “random selection assumption,” is that respondents randomly recruit their peers from their personal networks.

Central Limit Theorem: A sampling distribution of the mean is approximately normally distributed if the sample size is sufficiently large. This is true no matter what the population distribution is.

Abstract: In practical applications, sampled-data systems are often affected by unforeseen physical constraints that may cause deviations in the sampling interval from the expected value and result in ...