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Convenience sampling

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Tofazzal.ns:
Convenience sampling is generally known as careless, unsystematic, accidental or opportunistic sampling. The sample is selected according to the convenience of the sample. The researcher selects certain units convenient to him. It requires no pre-planning for the selection of items. Convenience sampling ensures convenience in respect of availability of source list and accessibility of the units. Despite being unscientific, a large number of samples are convenient sampling.
 
A convenience sampling is used in the following situations:
    1. when the universe is not clearly defined
    2. where sampling unit is not clear and
    3. when a complete source list is not available.

anam:
sir please mention the ref. book

imranmahmud:
For non-probability (if population is unknown), Between convenience and purposive sampling, the purposive sampling would be best. In purposive sampling you can set some rules (sampling frame) to check whether you respondent qualifies for the survey or not which is absent in convenience sampling. These links will explain more

http://dissertation.laerd.com/convenience-sampling.php

http://dissertation.laerd.com/purposive-sampling.php

 

Bipasha Matin:
But it is not acceptable in quality research

imranmahmud:
Bipasha Madam, are you referring to Convenience or purposive sampling?

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