Non-probability sampling

Friday, June 3, 2016

Non-probability sampling

Non-probability as the name connotes, where the respondent or individual in a survey might or mightn’t get a chance to participate. Thus, the chances of getting selected is not clear which is totally in contrast to probability sampling, where each participant deserves a chance. Non-probability sampling is a technique where a researcher utilizes his or her personal opinion in context to the accessibility of the participants. So, this content is all about various types of this sampling and the context in which, it is beneficial to employ. 

Categories of non-probability sampling are:

  • Convenience sampling
  • Consecutive sampling
  • Quota sampling
  • Judgmental sampling
  • Snowball sampling.

Let’s have a brief over these types of sampling. When it comes to convenience sampling, this technique is most sought after due to the reasons of easy accessibility on the part of a researcher to reach the respondents. With least amount of investment in terms of time and price, researcher could leverage the advantages. In the case of the attributes of consecutive sampling, it is almost same as the previous one. The only difference is that, it features with the aspect of inclusion of all the respondents in order to have better presentation.

As far as quota sampling is concerned, the researcher picks certain proportion of the participants based on identical traits. While employing the judgmental sampling, researcher picks the subjects or respondents keeping in cognizance of specific purpose. Finally the snowball sampling technique, if the number of respondents is very low. Here respondents are picked on the basis of, one respondent introducing to another as per the instruction of researcher. Thus, there are chances of more number of respondents getting involved in the study.

Now focus on its application in research study. Have a look at the attributes as per the user perspective such as:

  • To exhibit the existence of specific trait
  • At the time of conducting qualitative or pilot or exploratory study
  • In the case of impossibility of randomization
  • Beneficial when the resources of time, price, manpower is in limit, etc.

This is a snapshot over the advantageous features, a researcher could accrue. So, pay attention to your research study that, where you stand in context to the application of technique of non-probability sampling. Whether really you need it or not; moreover, which technique would be more fruitful. Like these, you might have so many concerns. However, our responsibility is to guide and mentor in right direction in order to meet the research goal. In addition to this, you could clarify any concerns related to statistical data analysis as well. If required, you could rely on our experts for developing thesis or dissertation as well. Thus, with our holistic academic support around, you are in a position to conquer the things which might have appeared invincible. Consult us as per your convenient time to seek more information.


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