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Marketing Research - Sampling, Types of Sampling (Cluster sampling…
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Types of Sampling
Cluster sampling
Definition: Cluster sampling is to merge the units in the population into a number of non - overlapping, non - repeated set, called a group; A sampling method in which samples are then sampled as a cluster.
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Convenience sampling
Definition：Convenience sampling is a non-probability sampling technique where subjects are selected because of their convenient accessibility and proximity to the researcher.
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disadvantages
The sample is not representative of the entire population, so results can't speak for them - inferences are limited. future data
Prone to volunteer bias
Judgement sampling
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Disadvantages: Very prone to bias, Samples often small, Cannot extrapolate from sample
Quota sampling
Definition: It is to divide the individuals in the population into several categories or layers according to specific criteria (gender, age, occupation, educational level, educational background, etc.), and then sample them in each layer.
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Disadvantages: Not random, so some risk of bias, Need to understand the population to be able to identify the basis of stratification
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Systematic sampling
Systematic sampling is a type of probability sampling method in which sample members from a larger population are selected according to a random starting point but with a fixed, periodic interval.
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