Sampling theory

1. What is the sampling theory?
2. What is sampling theory with example?
3. What is the aim of the sampling theory?
4. What are the 3 principles of sampling?

What is the sampling theory?

the body of principles underlying the drawing of samples that accurately represent the population from which they are taken and to which inferences will be made.

What is sampling theory with example?

Sampling theory is a study of relationships existing between a population and samples drawn from the population. Sampling theory is applicable only to random samples. For this purpose the population or a universe may be defined as an aggregate of items possessing a common trait or traits.

What is the aim of the sampling theory?

The aim of sampling is to approximate a larger population on characteristics relevant to the research question, to be representative so that researchers can make inferences about the larger population.

What are the 3 principles of sampling?

(a) The sample, that is, the selection of items from the parent population, is selected randomly. (b) The sample size, that is, the number of items in the sample is large enough to avoid sampling fluctuation. (c) Over a long period of time, sampling results will be true on average.