explain the merits and demerits of purposive and deliberate sampling
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Answer:
This method of sampling is also known as subjective or ‘judgment sampling’ method. Accordingly, investigator himself purposively chooses certain items which to his judgment are best representatives of the universe. Here the selection is deliberate and based on own idea of the investigator about the sample units.
As such under this method, the chance of inclusion of some items in the sample is very high while that of others is very low. However, for better selection of the items under this method certain criteria of selection is first laid down and then the investigator is allowed to make the selection of the items of his own accord within the orbit of those criteria. The relative merits and demerits of this method can be outlined as under: