1. Distinguish between probability and non-probability sampling and discuss the advantages and disadvantages of each. If you can not specify the probability that any given individual will be in the ...

Non-probability Sample: A sampling approach that does not confer every population member a known probability of selection, often necessitating additional statistical adjustments.

As the costs and nonresponse rates of traditional, probability-based surveys seem to grow each year, the advantages of online surveys are obvious – they are fast and cheap, and the technology is ...

Many online surveys are conducted using “nonprobability” or “opt-in” samples, which are generally easier and cheaper to conduct. In our latest Methods 101 video, we explore some of the features of ...

The FNVA employs a four-step weighting approach that combines the probability sample with the nonprobability sample, and refines estimates at a sub-regional level within each state.

This dissertation proposes a novel framework for correcting selection bias in nonprobability samples. The general idea is to construct a set of unit weights for the nonprobability sample by borrowing ...

AP VoteCast employs a four-step weighting approach that combines the probability sample with the nonprobability sample and refines estimates at a subregional level within each state.

A probability sample of households frequently must be translated into a sample of persons representing characteristics of the adult population. Researchers have developed at least 14 within-household ...

Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 63, No. 2, Themed issue on 'Social statistics' (FEBRUARY 2014), pp. 195-210 (16 pages) The paper addresses means of ...