Simple random sampling vs Convenience sampling

This post is in reference to the post by Hemangi, named Let’s get sampling! on Friday, April 6, 2007

• Simple random sampling

1. Any one can get seleceted from the sampling frame.hence we say that each individual has a chance of getting selected randomly.
2. Sample is representative of that particular area.
3. The result obtained is applicable to all people or to all crieteria means it is generalized because of random selection.
4. Sample selection is without any bias.
5. The list of all individuals or sample frame is not readily available.
6. This method is also called as "lottery method."
7. This type of sampling is used in survey methods of reaesrch.

• Convenience sampling

1. The sample or individual is selected purposefully.
2. The item may not be representative of any area.
3. The result may not be applicable to all people or all crietria because of purposefull selection.
4. Sample selection is with bias.
5. The sample is selected from the nearest population which is easily available to the researcher.
6. This type of sampling is also called as "accidental sampling" or "opportunity sampling."
7. This type of sampling can be used in case study method of research.