A simple random sample is a subset of a statistical population in which each member of the subset has an equal probability of ...

For a simple random sample, which selects people or households essentially independently and with equal probability, the probability of detecting COVID is: p = 1- (1-p₀)ⁿ ...

Key Takeaways A simple random sample is one of the methods researchers use to choose a sample from a larger population. This method works if there is an equal chance that any of the subjects in a ...

When observations are costly or time-consuming but the ranking of the observations without actual measurement can be done relatively easily, rankedset sampling (RSS) can be employed instead of simple ...

With simple random sampling and no stratification in the sample design, the selection probability is the same for all units in the sample. In this sample, the selection probability for each customer ...

This paper gives alternative derivations for the standard variance formulas in two-stage sampling. The derivations are based on a direct use of the statistical properties of the sampling errors in the ...

The usual modification of simple random sampling with replacement (srswr) which makes the usual ratio estimator unbiased for the population ratio is to choose the first unit in the sample with ...

This example illustrates the use of regression analysis in a simple random cluster sampling design. The data are from S rndal, Swenson, and Wretman (1992, p. 652). A total of 284 Swedish ...