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Eduncle posted an MCQ
October 18, 2019 • 16:01 pm 0 points
  • UGC NET
  • Library and Information Science

Which of the following are non-probability sampling techniques?

(a) Purposive (b) Convenience (c) Snowball (d) Simple random Choose the correct answer from the options given below :

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    Eduncle Best Answer

    Types of Non-Probability Sampling
    Convenience Sampling : as the name suggests, this involves collecting a sample from somewhere convenient to you: the mall, your local school, your church. Sometimes called accidental sampling, opportunity sampling or grab sampling.
    Haphazard Sampling : where a researcher chooses items haphazardly, trying to simulate randomness. However, the result may not be random at all and is often tainted by selection bias.
    Purposive Sampling : where the researcher chooses a sample based on their knowledge about the population and the study itself. The study participants are chosen based on the study's purpose. There are several types of purposive sampling. For a full list, advantages and disadvantages of the method, Expert Sampling: in this method, the researcher draws the sample from a list of experts in the field.
    Heterogeneity Sampling / Diversity Sampling : a type of sampling where you deliberately choose members so that all views are represented. However, those views may or may not be represented proportionally.
    Modal Instance Sampling : The most "typical" members are chosen from a set.
    Quota Sampling : where the groups (i.e. men and women) in the sample are proportional to the groups in the population.
    Snowball Sampling : where research participants recruit other members for the study. This method is particularly useful when participants might be hard to find. For example, a study on working prostitutes or current heroin users.

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