Probability & Non Probability Sampling

Non-probability types are convenience and purposive sampling. Convenience sampling is amongst the most utilized sampling strategies. In this case, the population or subjects are mainly categorized on the basis of convenience. This implies that the utilized sample is the one that is easily accessed by the researcher (Bachman & Schutt, 2017). In this case, it can be said that the sample is an unintentional one. On the other hand, the purposive sample refers to the non-illustrative section of the general population that is mainly constructed to serving specific purposes and needs. In this context, the investigator has a specified populace in mind that suits the subject being addressed (Bachman & Schutt, 2017). Both sampling techniques are pertinent in both qualitative and measurable subjects despite that convenience samples are often utilized in quantitative research. 

In regard to probability sampling Simple Random and Systematic sampling are the techniques that offer the basis for complex selection strategies. The simple random involves random selection of subjects from a specified populace while every subject holds similar possibilities of being selected (Daniel, 2012). On the other hand, systematic sampling incorporates the selection of subjects from a specified or organized populace with the utilization of interval or skipping techniques. Systematic samples are easy to implement despite the fact that they are influenced by biases which might generate inaccuracy. The two ethical considerations that might influence sampling techniques are accuracy and dependability. In that biases is not encouraged at any given period which therefore implies that accuracy is necessary for the conclusions to be grounded as reliable (Daniel, 2012). In addition, confidentiality matters much which works to ensure that the respondent’s views are guarded a strategy that promotes truthiness.

 

References

Bachman, R., & Schutt, R. K. (2017). The practice of research in criminology and criminal justice (6th Ed.). Thousand Oaks, CA: Sage.

Daniel, J. (2012). Sampling essentials: Practical guidelines for making sampling choices. Los Angeles [Calif.: SAGE.