Purposive sampling _ L\u00e6rd Dissertation.pdf - Cookies Privacy GETTING STARTED Quantitative Dissertations Dissertation Essentials QUANTITATIVE

Purposive sampling _ Lu00e6rd Dissertation.pdf - Cookies...

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Cookies & Privacy Feedback Purposive sampling Purposive sampling, also known as judgmental , selective or subjective sampling, is a type of non-probability sampling technique . Non-probability sampling focuses on sampling techniques where the units that are investigated are based on the judgement of the researcher [see our articles: Non-probability sampling to learn more about non-probability sampling, and Sampling: The basics , for an introduction to terms such as units , cases and sampling ]. There are a number of different types of purposive sampling, each with different goals. This article explains (a) what purposive sampling is, (b) the eight of the different types of purposive sampling, (c) how to create a purposive sample, and (d) the broad advantages and disadvantages of purposive sampling. Purposive sampling explained Types of purposive sampling Advantages and disadvantages of purposive sampling Purposive sampling explained Purposive sampling represents a group of different non-probability sampling techniques . Also known as judgmental , selective or subjective sampling, purposive sampling relies on the judgement of the researcher when it comes to selecting the units (e.g., people, cases/organisations, events, pieces of data) that are to be studied. Usually, the sample being investigated is quite small, especially when compared with probability sampling techniques . Unlike the various sampling techniques that can be used under probability sampling (e.g., simple random sampling, stratified random sampling, etc.), the goal of purposive sampling is not to randomly select units from a population to create a sample with the intention of making generalisations (i.e., statistical inferences ) from that sample to the population of interest [see the article: Probability sampling ]. This is the general intent of research that is guided by a quantitative research design . The main goal of purposive sampling is to focus on particular characteristics of a population that are of interest, which will best enable you to answer your research questions. The sample being studied is not representative of the population, but for researchers pursuing qualitative or mixed methods research designs , this is not considered to be a weakness. Rather, it is a choice, the purpose of which varies depending on the type of purposing sampling technique that is used. For example, in homogeneous sampling , units are selected based on their having similar characteristics because such characteristics are of particular interested to the researcher. By contrast, critical case sampling is frequently used in exploratory , qualitative research in order to assess whether the phenomenon of interest even exists (amongst other reasons). During the course of a qualitative or mixed methods research design , more than one type of purposive sampling technique may be used. For example, critical case sampling may be used to investigate whether a phenomenon is worth investigating further, GETTING STARTED QUANTITATIVE DISSERTATIONS FUNDAMENTALS Quantitative Dissertations Dissertation Essentials Research Strategy Data Analysis
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